If you have an autoimmune disease, you've probably heard that you should "heal your gut." But what does that actually mean? And more importantly, what does gut health have to do with autoimmune disease? This is a question I find particularly interesting in patients who develop autoimmune symptoms after a significant gastrointestinal infection. Maybe you had food poisoning while travelling. Maybe you developed persistent digestive symptoms after a bout of gastroenteritis. Maybe you were diagnosed with H. pylori. Or perhaps your digestion seemed to change completely before you developed thyroid antibodies, joint pain, inflammatory symptoms, skin problems or another autoimmune condition. The connection between gut health and autoimmune disease is becoming an increasingly important area of research. We now understand that the gut microbiome, intestinal barrier and immune system are deeply interconnected. Research has identified differences in gut microbial composition and function across a number of autoimmune diseases, including Hashimoto's thyroiditis, rheumatoid arthritis, systemic lupus erythematosus and multiple sclerosis. But there is another piece of this conversation that I think deserves more attention: Gut infections. Because sometimes the question isn't simply, "How can we improve gut health?" It is: "What happened to the gut before the autoimmune disease developed?" The connection between gut health and autoimmune disease The gastrointestinal tract is much more than a digestive system. It is one of the body's largest interfaces with the outside world and contains an enormous concentration of immune tissue. Every day, the immune system has to decide what belongs in the "tolerate" category and what represents a potential threat. Food proteins. Beneficial bacteria. Pathogenic organisms. Microbial metabolites. Environmental antigens. This requires an incredibly sophisticated balance between immune activation and immune tolerance. The gut microbiome plays an important role in this process. Microorganisms living in the digestive tract produce metabolites that interact with intestinal cells and immune cells. Certain microbial metabolites can support regulatory immune pathways, while other microbial signals can promote inflammatory activity. A 2025 systematic review examining the role of the gut microbiota in autoimmune disease concluded that alterations in microbial communities and intestinal barrier function are increasingly associated with autoimmune pathogenesis, although the precise causal relationships are still being investigated. A separate 2025 systematic review and meta-analysis found consistent associations between alterations in the gut microbiome, intestinal permeability and several autoimmune diseases, while also finding that some microbiota-directed interventions were associated with improvements in disease activity and immune markers. The authors emphasized that more research is needed before specific microbiome interventions can be considered established treatments for autoimmune disease. So when we talk about gut health and autoimmune disease, we're not simply talking about digestion. We're talking about the relationship between: The microbiome → the intestinal barrier → the immune system. And gut infections can disrupt all three. What happens to gut health after an infection? Think about what happens during a significant gastrointestinal infection. The immune system becomes highly activated. The intestinal lining becomes inflamed. The microbial environment changes. Sometimes antibiotics are introduced. Diet changes because you're unable to tolerate your usual foods. Bowel motility may change. And the composition of the microbiome can shift. For some people, everything eventually returns to normal. For others, the digestive system never quite feels the same again. The infection may have resolved, but the patient is left with: persistent bloating reflux abdominal pain diarrhea or constipation new food sensitivities fatigue changes in bowel habits increased inflammatory symptoms This is one reason I think it is important to distinguish between the infection itself and the aftermath of the infection. The pathogen may no longer be present, but the intestinal ecosystem and immune environment may have changed. And in someone who is genetically predisposed to autoimmunity, that altered environment may become one of several factors contributing to loss of immune tolerance. This is not proof that a previous infection caused an autoimmune disease. Autoimmunity is multifactorial. Genetics, hormones, environmental exposures, nutrition, infections, metabolic health and other immune triggers can all contribute. But the timeline can provide an important clue. How can a gut infection potentially contribute to autoimmunity? There are several mechanisms researchers are investigating. 1. Intestinal barrier disruption The intestinal lining acts as a selective barrier between the contents of the digestive tract and the immune system. When intestinal barrier function is impaired, microbial products and other antigens may have greater interaction with immune cells. This can contribute to inflammatory signalling and may be particularly relevant in people who are already genetically susceptible to autoimmune disease. The concept is often referred to as "leaky gut," but intestinal permeability is the more scientifically appropriate term. Importantly, increased intestinal permeability is not synonymous with autoimmune disease, and it is not appropriate to assume that everyone with an autoimmune condition has a single "leaky gut" problem that can be fixed with supplements. The biology is considerably more complicated. 2. Microbiome disruption A gastrointestinal infection can change the microbial ecosystem. And the microbiome is part of the immune system's environment. Research has identified disease-associated changes in microbial diversity, composition and microbial metabolites across several autoimmune diseases. Some of these changes may be a consequence of autoimmune disease rather than the cause. This is an important distinction. The relationship is likely bidirectional: Gut health can influence immune function, while systemic inflammation and autoimmune disease can also influence gut health. 3. Molecular mimicry Some infections may also contribute to autoimmunity through a process known as molecular mimicry. This occurs when components of a microorganism resemble proteins found in human tissue closely enough that an immune response directed against the pathogen may potentially cross-react with the body's own tissues. Molecular mimicry is one of several mechanisms proposed to explain infection-associated autoimmunity. This doesn't mean that every infection causes autoimmunity. It means that, in genetically susceptible individuals, an infection may potentially provide an immune stimulus that contributes to loss of tolerance. H. pylori and autoimmune disease One of the most clinically interesting examples is Helicobacter pylori. H. pylori is a bacterium that colonizes the stomach and can persist for years. It is best known for its role in gastritis and peptic ulcer disease, but researchers have also investigated its relationship with conditions outside the gastrointestinal tract. One particularly interesting association is between H. pylori and autoimmune thyroid disease. A meta-analysis including 15 studies and more than 3,000 participants found that H. pylori infection was associated with autoimmune thyroid disease. The association was also observed specifically with Hashimoto's thyroiditis and Graves' disease. This is clinically interesting, but it needs to be interpreted carefully. Association does not prove causation. The evidence does not mean that H. pylori is the cause of Hashimoto's thyroiditis. However, if someone has Hashimoto's alongside symptoms such as chronic gastritis, reflux, dyspepsia or unexplained iron deficiency, a history of H. pylori becomes relevant. Instead of simply asking: "How do we manage the thyroid?" it may also be worth asking: "What is happening in the gastrointestinal tract?" Gut health, histamine and mast cells There is another connection that I frequently see clinically: patients with digestive problems who also develop new food reactions, flushing, headaches, itching or other histamine-related symptoms. The gut contains a large population of mast cells, which are immune cells involved in allergic and inflammatory responses. Mast cells can release histamine as well as numerous other inflammatory mediators. And the relationship between the microbiome and mast cells appears to work in both directions. Research suggests that microbial signals can influence mast-cell activity, while mast-cell mediators can also influence the intestinal environment. A 2025 review described this microbiota–mast-cell interaction as an important component of intestinal immune regulation. Some intestinal bacteria can also produce histamine. Certain bacterial species contain enzymes that convert histidine into histamine, creating another potential link between changes in the gut microbiome and histamine-related symptoms. But this is where nuance matters. Finding a bacterium that can produce histamine does not automatically mean that the organism is responsible for someone's symptoms. Histamine production depends on the specific organism, its abundance, the intestinal environment and the individual's ability to metabolize histamine. And having food reactions does not automatically mean someone has mast cell activation syndrome (MCAS). MCAS is a specific clinical diagnosis and should not become a catch-all explanation for unexplained digestive symptoms. The broader point is simply that: The microbiome, intestinal immune system and mast cells communicate with one another. When the gut environment changes, those interactions can change too. Could a gut infection be the first domino? Consider a patient who was completely healthy until a significant gastrointestinal infection. The infection resolves. But afterward: She develops chronic bloating. Then reflux. Then new food sensitivities. Then fatigue. Eventually, thyroid antibodies become positive. Is it possible that the original infection contributed to the autoimmune disease? Potentially. Can we prove that it caused it? Usually not. There may have been genetic susceptibility that existed long before the infection. There may have been other environmental or hormonal triggers. The infection may have been one of several "hits" that shifted the immune system away from tolerance. This is how I think about the relationship between gut health and autoimmune disease. Not as one simple cause and effect. But as a complex interaction between genetics, the immune system, the microbiome and environmental triggers. What should you investigate if you have autoimmune disease and digestive symptoms? This is where personalized assessment becomes important. I don't believe every patient with an autoimmune disease needs extensive infectious or microbiome testing. The right question is: What does the patient's history tell us to investigate? Some of the questions I would consider include: Was there a significant gastrointestinal infection before symptoms began? Food poisoning, travel-related illness, prolonged gastroenteritis or another documented infection can provide an important timeline. Did digestion change after the infection? Persistent bloating, reflux, diarrhea, constipation or abdominal pain may suggest that the gut did not fully recover. Is H. pylori a possibility? This becomes particularly relevant with upper-GI symptoms, gastritis, dyspepsia or unexplained iron deficiency. Is there evidence of ongoing intestinal inflammation? This should be evaluated appropriately rather than assuming that all digestive symptoms are simply "dysbiosis." Could medications or antibiotics have altered the gut microbiome? Antibiotic exposure can substantially influence microbial communities, and the effects can persist beyond the period of treatment. Are there symptoms suggestive of mast-cell or histamine involvement? Flushing, itching, hives, episodic GI symptoms and reactions involving multiple organ systems may warrant further investigation. The goal isn't to test everything. The goal is to identify the most clinically relevant pieces of the puzzle. How do you improve gut health when you have an autoimmune disease? This is where I think the conversation often becomes too simplistic. There is no universal "autoimmune diet." There is no single probiotic that fixes the microbiome. And taking a long list of supplements isn't the same thing as improving gut health. A more useful approach is to identify what is actually disrupting the gastrointestinal environment. That may mean addressing: An active infection Post-infectious digestive dysfunction Inflammation Nutritional deficiencies Altered bowel motility Poor dietary diversity Low fibre intake Excessive alcohol intake Sleep disruption Metabolic dysfunction or other individualized factors. If an infection is present, it should be appropriately treated. If the gut has been disrupted following an infection, the next step is understanding what has changed rather than simply throwing probiotics at the problem. And if someone has an established autoimmune disease, gut-focused care should complement — not replace — appropriate conventional medical treatment. The gut may be part of the autoimmune story The relationship between gut health and autoimmune disease is complex. We cannot say that poor gut health causes every autoimmune disease. We cannot say that treating the gut will cure autoimmunity. And we cannot assume that every patient with digestive symptoms has dysbiosis, intestinal permeability or MCAS. But we also shouldn't ignore the gut. The microbiome interacts with the immune system. The intestinal barrier regulates exposure to microbial and dietary antigens. Gut infections can profoundly alter the intestinal environment. And emerging research continues to identify associations between gut microbial changes and autoimmune disease. For some patients, the most important clue may be found in the timeline. What happened before the autoimmune disease appeared? Was there an infection? Did digestion change? Did food tolerance change? Did inflammation begin? Did the immune system start behaving differently? Sometimes the diagnosis is simply the point at which the problem became measurable. The biological story may have started much earlier. And for some people, that story may begin in the gut. Frequently Asked Questions Can poor gut health cause autoimmune disease? There is increasing evidence linking the gut microbiome, intestinal barrier function and immune regulation with autoimmune disease. However, autoimmune diseases are multifactorial, and there is not enough evidence to say that poor gut health alone causes autoimmune disease. Can a gut infection trigger autoimmune disease? Certain infections can act as immune triggers in genetically susceptible individuals. Researchers have proposed mechanisms including molecular mimicry, altered immune signalling and disruption of the intestinal environment. However, an infection should be considered one potential contributing factor rather than a universal cause of autoimmune disease. Is H. pylori associated with Hashimoto's? Research has found an association between H. pylori infection and autoimmune thyroid diseases, including Hashimoto's thyroiditis. A meta-analysis of 15 studies found an association between H. pylori infection and autoimmune thyroid disease, although this does not establish that H. pylori causes Hashimoto's. Can gut bacteria produce histamine? Yes. Certain bacterial strains can produce histamine through histidine decarboxylase activity. However, the presence of a potentially histamine-producing organism does not by itself establish that it is causing histamine-related symptoms. Is gut health important if I have Hashimoto's? Gut health may be relevant because the gastrointestinal microbiome and immune system interact closely, and research has identified differences in the gut microbiome of people with autoimmune thyroid disease. However, gut-focused care should be individualized and should complement appropriate medical management of Hashimoto's. References Adawi M. The role of gut microbiota in autoimmune disease progression and therapy: a comprehensive synthesis. Front Microbiomes. 2025. Vineesh A, et al. Exploring the Relationship Between Gut Health and Autoimmune Diseases: A Systematic Review and Meta-Analysis. Cureus. 2025. Hou Y, et al. Meta-analysis of the correlation between Helicobacter pylori infection and autoimmune thyroid diseases. Oncotarget. 2017.

When couples begin trying to conceive, much of the attention is often placed on the woman's health. While optimizing female hormones and ovulation is important, male fertility contributes to approximately 40-50% of infertility cases, making sperm health an equally important part of the fertility equation. The encouraging news is that sperm quality is highly responsive to lifestyle, nutrition, environmental exposures, and overall health. Because sperm are continuously produced, positive changes made today can begin improving sperm quality within approximately 70-90 days, the length of one sperm production cycle. If you're planning for pregnancy—or simply want to optimize your reproductive health—understanding what influences sperm quality is an excellent place to start. What Determines Healthy Sperm? A semen analysis evaluates several characteristics that influence fertility. The three most important include sperm count, motility, and morphology. Sperm Count Sperm count refers to the concentration of sperm present in semen. Although only one sperm is required to fertilize an egg, having a higher concentration significantly increases the likelihood that a healthy sperm reaches the egg. According to the World Health Organization (WHO), a normal sperm concentration is 15 million sperm per millilitre or greater. A low sperm count (oligospermia) may reduce the chances of natural conception but can often improve when underlying lifestyle or medical factors are addressed. Sperm Motility Motility describes how effectively sperm move. To fertilize an egg, sperm must travel through the female reproductive tract, making strong forward movement essential. Poor motility can prevent sperm from successfully reaching the egg, even when sperm count is normal. The WHO considers 40% or more motile sperm to be within the normal range. Sperm Morphology Morphology refers to the shape and structure of sperm. Healthy sperm typically have: An oval-shaped head An intact midpiece A single long tail Although many sperm naturally have abnormal shapes, a higher percentage of normally formed sperm improves the likelihood of successful fertilization. Why Sperm Health Matters Beyond Conception Healthy sperm do more than increase the chance of pregnancy. Emerging research suggests paternal health before conception may influence: Embryo development Implantation success Pregnancy outcomes DNA integrity within sperm The long-term health of offspring Factors such as oxidative stress, obesity, smoking, poor nutrition, and chronic inflammation can increase DNA damage within sperm, potentially affecting reproductive outcomes. For this reason, optimizing male health before conception is becoming an increasingly important part of evidence-based fertility care. How to Improve Sperm Health Naturally One of the advantages of sperm production is that it is constantly renewing. It takes approximately 74 days for sperm to develop, followed by another 2–3 weeks to mature and travel through the reproductive tract. For this reason, men should ideally begin optimizing their health at least 3 months before trying to conceive, although 6 months provides even greater opportunity to improve sperm quality and address nutritional deficiencies. Follow a Mediterranean-Style Diet Diet is one of the strongest lifestyle predictors of semen quality. Numerous systematic reviews have found that men who closely follow a Mediterranean dietary pattern have higher sperm concentration, improved motility, and reduced DNA fragmentation compared with those consuming a typical Western diet. Aim for: Vegetables ≥5 servings/day Prioritize leafy greens, cruciferous vegetables, tomatoes, peppers and colourful vegetables rich in antioxidants. Fruit 2–3 servings/day Particularly berries, citrus, pomegranate and kiwi, which provide vitamin C and polyphenols. Healthy fats Extra virgin olive oil as the primary cooking oil 1–2 tablespoons/day Nuts Approximately 60 g (2 oz) daily A landmark randomized trial demonstrated that adding 60 g of mixed walnuts, almonds and hazelnuts daily for 14 weeks significantly improved sperm count, motility, morphology and DNA integrity. Omega-3-rich fish 2–3 servings/week Salmon, sardines, trout, herring and mackerel provide DHA, an essential structural component of sperm membranes. Protein Include lean poultry, legumes and seafood. Limit processed meats, which have consistently been associated with poorer semen parameters. Limit Sugar-sweetened beverages Ultra-processed foods Deep-fried foods Refined carbohydrates Excess trans fats Processed meats These dietary patterns are associated with increased oxidative stress and poorer sperm quality. Exercise Regularly—But Avoid Overtraining Regular exercise improves insulin sensitivity, reduces inflammation and supports testosterone production. Research suggests the greatest improvements in semen quality occur with moderate-intensity exercise performed consistently. Aim for: 150–300 minutes/week of moderate aerobic activity 2–4 resistance training sessions/week Daily walking (7,000–10,000 steps/day) Examples include: Strength training Brisk walking Swimming Rowing Hiking Moderate cycling Interestingly, several studies have shown that resistance training may produce greater improvements in testosterone and semen quality than endurance exercise alone. Avoid excessive endurance exercise Training for marathons, ultramarathons or performing very high volumes of endurance exercise (>8–10 hours/week) has been associated with: Lower testosterone Reduced sperm concentration Reduced motility The goal is consistent movement—not elite athletic performance. Prioritize Sleep Sleep has a profound effect on testosterone production. Several observational studies have demonstrated that men sleeping less than 6 hours per night often have lower testosterone levels and poorer semen quality compared with those sleeping 7–8 hours. Aim for 7–9 hours/night Consistent bedtime and wake time Minimize bright screens for 1–2 hours before bed Treat suspected sleep apnea if present Sleep deprivation increases oxidative stress and disrupts the hormones involved in sperm production. Reduce Chronic Stress While occasional stress is unlikely to impair fertility, chronic stress can alter the hypothalamic-pituitary-gonadal axis and increase cortisol production. Higher cortisol levels have been associated with lower testosterone and poorer semen quality. Evidence-based stress reduction strategies include: Mindfulness meditation (10–20 minutes/day) Yoga Regular exercise Breathwork Spending time outdoors The objective isn't eliminating stress—it's improving your body's resilience to it. Maintain a Healthy Body Weight Both obesity and being significantly underweight may negatively affect fertility. Excess visceral fat contributes to: Increased estrogen production Lower testosterone Chronic inflammation Increased oxidative stress Studies consistently demonstrate improved hormone profiles and semen parameters following modest weight loss in overweight men. Even a 5–10% reduction in body weight can improve metabolic health and reproductive hormones. Avoid Heat Exposure The testes function best at temperatures approximately 2–4°C below core body temperature. Repeated heat exposure may temporarily reduce sperm production. While occasional sauna use is unlikely to have lasting effects, men actively trying to conceive should consider minimizing prolonged exposure during the 3 months before conception. Try to limit: Hot tubs (>38–40°C) Long sauna sessions Heated car seats Laptops directly on the lap Tight compression underwear worn all day Choose loose-fitting underwear when practical. Minimize Environmental Toxins Several endocrine-disrupting chemicals have been associated with reduced sperm quality. Where practical: Store food in glass or stainless steel Avoid microwaving food in plastic Wash produce thoroughly Reduce pesticide exposure Choose BPA-free products Wear appropriate protective equipment when working with industrial chemicals or solvents While no single exposure is likely responsible, cumulative exposure over years may contribute to impaired fertility. Stop Smoking Smoking remains one of the strongest modifiable risk factors for male infertility. Compared with non-smokers, smokers demonstrate: Lower sperm concentration Reduced motility Increased abnormal morphology Higher sperm DNA fragmentation The encouraging news is that improvements may begin within one sperm production cycle after quitting. Ideally, smoking cessation should occur at least 3 months before conception. Limit Alcohol Heavy alcohol consumption has been associated with: Lower testosterone Reduced sperm production Increased estrogen Poorer semen quality Current evidence suggests: ≤7 standard drinks/week is unlikely to significantly impair fertility in most healthy men. >14 drinks/week or binge drinking is associated with measurable declines in semen quality. For couples actively trying to conceive, minimizing alcohol for the 3 months before conception is a reasonable evidence-based recommendation. 10. Consider Targeted Nutritional Supplements Certain nutrients have been shown to support healthy sperm production, particularly in men with oxidative stress or nutritional deficiencies. Some of the best-studied include: Coenzyme Q10 Omega-3 fatty acids Zinc Selenium Vitamin D Folate Vitamin C Vitamin E L-carnitine Because fertility supplements vary considerably in quality and dosage, individualized recommendations are ideal. When Should You Have Your Fertility Evaluated? If you've been trying to conceive for: 12 months (if the female partner is under age 35), or 6 months (if the female partner is over age 35), both partners should undergo a fertility assessment. For men, this typically includes a semen analysis alongside an evaluation of hormone status, nutritional health, medical history, medications, and lifestyle factors that may be affecting fertility. Early assessment can often identify reversible causes and help couples pursue the most appropriate treatment strategy sooner. Supporting Male Fertility Naturally Male fertility is influenced by far more than genetics. Nutrition, exercise, sleep, environmental exposures, hormone balance, and overall health all play meaningful roles in sperm quality. Because sperm regenerate approximately every three months, even modest lifestyle improvements can produce measurable changes over a relatively short period of time. If you're preparing for pregnancy or experiencing fertility challenges, a personalized assessment can help identify modifiable factors and develop a targeted plan to optimize reproductive health. At my Toronto naturopathic practice, I work with individuals and couples using evidence-based testing and personalized treatment plans to support fertility, hormone balance, and overall health. Book a consultation with Dr. Holmberg, ND to discuss your fertility goals and create a comprehensive plan tailored to your individual needs at 647 351 7282 or online at www.courtneyholmbergnd.ca.

Lab Tests I Actually Order as a Naturopathic Doctor If you're struggling with fatigue, weight gain, PMS, acne, hair loss, irregular periods, infertility, anxiety, low libido, or perimenopause symptoms, you've probably wondered whether your hormones are to blame. The challenge is that many women are told their hormones are "normal" after completing only a handful of basic blood tests. Unfortunately, hormones don't operate in isolation. They are influenced by your thyroid, metabolism, nutrient status, gut health, inflammation levels, and even how your body responds to stress. One of the biggest mistakes I see is women spending hundreds of dollars on supplements without first understanding what's actually driving their symptoms. Testing allows us to move beyond guessing and identify the root cause. Below is the female hormone testing checklist I commonly use in practice when investigating hormone-related concerns. Thyroid Testing Markers I Commonly Assess ✓ TSH ✓ Free T4 ✓ Free T3 ✓ Reverse T3 ✓ Thyroid Peroxidase Antibodies (TPOAb) ✓ Thyroglobulin Antibodies (TgAb) Why These Markers Matter Your thyroid acts like the thermostat for your metabolism. Every cell in your body relies on thyroid hormones to determine how much energy it produces. When thyroid function slows down, it can affect virtually every system in the body. Women with thyroid dysfunction commonly experience: Fatigue Weight gain Hair loss Constipation Depression Brain fog Irregular periods Fertility challenges Many women are told their thyroid is normal because their TSH falls within range. However, TSH is only one piece of the puzzle. A more comprehensive assessment can uncover autoimmune thyroid disease, poor conversion of T4 into active T3, or early thyroid dysfunction before it becomes obvious on standard testing. Female Hormone Testing Markers I Commonly Assess ✓ Estradiol (E2) - day 3 ✓ Progesterone - 5-7 days post-ovulation (you cannot test progesterone in your follicular phase) ✓ Testosterone ✓ Free Testosterone ✓ DHEA-S ✓ SHBG ✓ LH ✓ FSH ✓ Prolactin ✓ Anti-Müllerian Hormone (AMH) Why These Markers Matter These are the hormones most women think about when they hear the phrase "hormone imbalance." They influence: Menstrual cycles Ovulation Fertility Mood Energy Libido Skin health Muscle mass Perimenopause symptoms What's important is that hormones rarely become imbalanced without a reason. While identifying abnormal estrogen, progesterone, or testosterone levels is helpful, understanding why they became abnormal is often where the real answers are found. Blood Sugar & Insulin Resistance Testing Markers I Commonly Assess ✓ Fasting Glucose ✓ Fasting Insulin ✓ Hemoglobin A1c ✓ ApoB ✓ Triglycerides ✓ HDL Cholesterol Why These Markers Matter Most women associate blood sugar problems with diabetes. In reality, insulin is one of the most powerful hormones in the body and plays a major role in reproductive health. Elevated insulin levels can contribute to: PCOS Infertility Weight gain Cravings Hormonal acne Elevated testosterone Chronic inflammation One of the most overlooked findings in practice is insulin resistance in women who have completely normal glucose levels. Testing insulin early often identifies metabolic dysfunction years before diabetes develops. Iron & Energy Testing Markers I Commonly Assess ✓ Ferritin ✓ Iron ✓ Total Iron Binding Capacity (TIBC) ✓ Transferrin Saturation ✓ Complete Blood Count (CBC) Why These Markers Matter Not every symptom that feels hormonal is actually hormonal. Iron deficiency is one of the most common causes of fatigue, hair loss, brain fog, and poor exercise recovery in women. Ferritin, which reflects stored iron, is one of my favourite markers because low levels can contribute to symptoms long before anemia develops. Many women are told their CBC is normal despite having ferritin levels that may be contributing to significant symptoms. Nutrient Status Testing Markers I Commonly Assess ✓ Vitamin D ✓ Vitamin B12 ✓ Folate ✓ Zinc ✓ RBC Magnesium ✓ Homocysteine Why These Markers Matter Hormones are built from nutrients. If your body lacks the nutrients required to produce, metabolize, and detoxify hormones efficiently, symptoms can develop regardless of what your hormone levels look like on paper. Deficiencies may contribute to: Fatigue Hair loss Anxiety Depression Fertility challenges Poor stress resilience Impaired hormone production One marker I particularly like is homocysteine because it provides insight into methylation, a process involved in estrogen metabolism, detoxification, cardiovascular health, and neurotransmitter production. Inflammation Testing Markers I Commonly Assess ✓ High Sensitivity C-Reactive Protein (hs-CRP) ✓ ESR ✓ Fibrinogen Why These Markers Matter Inflammation is one of the most common drivers of chronic disease and hormone dysfunction. Low-grade inflammation can influence: Estrogen metabolism Insulin sensitivity Ovulation Thyroid function Autoimmune disease Fertility outcomes Many women don't realize that inflammation can exist for years before symptoms become severe enough to trigger a diagnosis. Identifying and addressing inflammation early can have significant impacts on long-term health. Gut Health Testing Markers I Commonly Assess ✓ β-Glucuronidase ✓ Calprotectin ✓ Secretory IgA ✓ Zonulin ✓ Pancreatic Elastase ✓ Short Chain Fatty Acids ✓ Akkermansia spp. ✓ Faecalibacterium prausnitzii ✓ Microbial Diversity Score ✓ H. pylori ✓ Yeast & Fungal Assessment Why These Markers Matter Your gut does much more than digest food. It plays a major role in: Estrogen metabolism Immune regulation Nutrient absorption Inflammation control Neurotransmitter production One of my favourite markers is β-Glucuronidase. Think of estrogen detoxification like taking out the garbage. Your liver packages estrogen for elimination. Elevated β-Glucuronidase can reopen that package and allow estrogen to be reabsorbed back into circulation. This may contribute to symptoms such as: PMS Heavy periods Breast tenderness Hormonal acne Estrogen dominance symptoms I also pay close attention to beneficial bacteria such as Akkermansia and Faecalibacterium, as well as overall microbial diversity, because these organisms play important roles in inflammation regulation, gut barrier integrity, and metabolic health. 8. DUTCH Hormone Testing Markers Assessed in a DUTCH Hormone Test: ✓ Estrone (E1) ✓ Estradiol (E2) ✓ Estriol (E3) ✓ Progesterone Metabolites ✓ Testosterone Metabolites ✓ DHEA Metabolites ✓ Cortisol Metabolites ✓ Cortisone Metabolites ✓ 2-OH Estrogen ✓ 4-OH Estrogen ✓ 16-OH Estrogen ✓ Methylation Markers Why These Markers Matter The DUTCH Test goes beyond measuring hormone levels. It allows us to understand how your body is processing and metabolizing hormones. This is particularly useful for women experiencing: PMS Estrogen dominance Hormonal acne Fertility concerns Perimenopause symptoms Unexplained hormone-related symptoms despite normal bloodwork In many cases, the issue isn't how much estrogen you're producing—it's how you're metabolizing and eliminating it. Why I Rarely Order Cortisol Testing This often surprises patients. While cortisol is an important hormone, I don't routinely place significant emphasis on cortisol blood testing. Cortisol is one of the most dynamic hormones in the body. Levels can fluctuate dramatically based on: Sleep quality Emotional stress Exercise Blood sugar fluctuations Illness Caffeine intake Menstrual cycle phase Even anxiety about having blood drawn A single cortisol measurement often provides very little insight into how your body handles stress day to day. Instead, I prefer to evaluate how stress is impacting the body in real time. What I Find More Useful I often encourage patients to use wearable technology such as: Oura Ring WHOOP Ultrahuman Ring Key metrics I pay attention to include: ✓ Resting Heart Rate (RHR) ✓ Heart Rate Variability (HRV) ✓ Sleep Duration ✓ Sleep Quality ✓ Recovery Metrics Why Resting Heart Rate Matters Your resting heart rate can act as a real-time stress biomarker. When the body is under increased stress from poor sleep, overtraining, illness, undereating, inflammation, or emotional stress, resting heart rate often rises before symptoms become obvious. Why Heart Rate Variability Matters HRV reflects how adaptable and resilient your nervous system is. Generally speaking: Higher HRV = greater recovery and resilience Lower HRV = greater physiological stress In many cases, tracking these metrics over months provides significantly more actionable information than a single cortisol measurement. The Bottom Line There is no single hormone test that works for every woman. The most effective approach is to identify which systems are contributing to your symptoms and select the appropriate tests accordingly. In practice, I rarely find a hormone issue that exists in isolation. More often, symptoms are influenced by a combination of thyroid function, metabolic health, nutrient status, gut health, inflammation, and lifestyle factors. If you're struggling with hormone-related symptoms and want a personalized assessment, booking a comprehensive hormone evaluation with Dr. Courtney Holmberg, one of the Toronto-based Naturopathic Doctors, is often the first step toward understanding what's really going on beneath the surface. Testing helps us stop guessing and start building a treatment plan based on data. If you're struggling with hormone-related symptoms and want a personalized assessment, booking a comprehensive hormone evaluation is often the first step toward understanding what's really going on beneath the surface.

One of the most common questions I hear from women in practice is: "Is this just PMS, or could I be entering perimenopause?" For many women, the answer isn't immediately obvious. You may have had manageable PMS symptoms for years, only to notice that in your late 30s or 40s things suddenly feel different. Perhaps your periods have become heavier, your mood swings more intense, or you're finding it harder to sleep in the days leading up to your cycle. Maybe you've started experiencing anxiety, brain fog, or exhaustion that seems out of proportion to what you've experienced in the past. Because PMS and perimenopause share many overlapping symptoms, it can be difficult to know what your body is trying to tell you. Understanding the difference matters. While both PMS and perimenopause are common experiences, significant changes in your menstrual cycle, mood, energy, or overall well-being should not be dismissed simply as "normal female hormones." These symptoms often provide valuable clues about what's happening beneath the surface and may signal an opportunity for further investigation and support. In this article, we'll explore the differences between PMS vs perimenopause, why symptoms often worsen during the menopausal transition, and when it's worth having a more in-depth conversation with your healthcare provider. What is PMS? Premenstrual Syndrome (PMS) refers to the physical and emotional symptoms that occur during the luteal phase of the menstrual cycle, typically 1–2 weeks before your period begins. Common PMS symptoms include: Mild mood changes or irritability Breast tenderness Bloating Food cravings Fatigue Mild headaches Increased emotional sensitivity Mild menstrual cramps The hallmark feature of PMS is its predictable pattern. Symptoms appear after ovulation, improve when your period starts, and resolve completely during the first half of your cycle. Most women experience at least a few mild PMS symptoms throughout their reproductive years. What is Perimenopause? Perimenopause is the transition period leading up to menopause, during which ovarian hormone production becomes increasingly unpredictable. Many women assume menopause begins when periods stop altogether. In reality, perimenopause often starts years earlier, commonly during the late 30s to mid-40s. During this transition, fluctuating estrogen and progesterone levels can lead to symptoms such as: Worsening PMS Increased anxiety Mood swings Sleep disturbances Night sweats Hot flashes Brain fog Fatigue Heavier periods Shorter or longer menstrual cycles New-onset headaches Reduced stress tolerance Because hormone fluctuations can be significant from one cycle to the next, symptoms may feel inconsistent or unpredictable. PMS vs Perimenopause: What's the Difference? Although the symptoms overlap, several clues can help distinguish between the two. PMS tends to follow a predictable pattern: Symptoms occur 1–2 weeks before your period. Symptoms improve once menstruation begins. Cycles remain relatively regular. The severity of symptoms stays fairly consistent from month to month. Perimenopause is often characterized by change: PMS symptoms suddenly worsen. Cycles become shorter, longer, heavier, or more irregular. Symptoms begin appearing outside the premenstrual window. Sleep becomes disrupted. Anxiety feels more intense than usual. Hot flashes or night sweats develop. You notice a decline in resilience to stress. A woman who previously had minimal PMS but suddenly develops severe symptoms at age 42 may not simply have "bad PMS"—she may be entering perimenopause. When Are PMS Symptoms Considered Abnormal? Some degree of premenstrual change is common. However, severe symptoms should not be dismissed as something you simply have to tolerate. Consider seeking further assessment if: PMS symptoms interfere with work, relationships, or daily functioning. You experience severe anxiety, depression, rage, or panic attacks before your period. You require regular pain medication to function. Symptoms are progressively worsening over time. Your periods have become significantly heavier or more irregular. Symptoms persist throughout the entire month. Basic lifestyle strategies are no longer helping. These symptoms may reflect hormonal shifts associated with perimenopause, but they can also be influenced by thyroid dysfunction, nutrient deficiencies, chronic stress, blood sugar dysregulation, or conditions such as endometriosis or fibroids. How a Naturopathic Doctor Can Help One of the greatest frustrations women experience is being told that their symptoms are "normal" despite feeling no longer like themselves. While hormonal changes during the reproductive years and perimenopause are common, suffering through them is not inevitable. As a Toronto-based Naturopathic Doctor, taking a root-cause approach to hormonal health is key. Rather than simply suppressing symptoms, we work to understand why they are occurring and what factors may be contributing. A comprehensive assessment may include evaluating: Hormonal patterns and menstrual history Stress and cortisol resilience Sleep quality Nutrient status, including iron, magnesium, and B vitamins Thyroid function Blood sugar regulation Digestive health and nutrient absorption Environmental and lifestyle factors that influence hormone metabolism From there, individualized treatment plans may incorporate evidence-informed nutrition strategies, targeted supplementation, lifestyle interventions, and further investigation when appropriate. The Bottom Line If your PMS has changed dramatically, become increasingly disruptive, or no longer follows the predictable pattern it once did, your body may be signalling that something deeper deserves attention. Whether you're experiencing PMS, entering perimenopause, or navigating a combination of both, understanding the root cause of your symptoms is the first step toward feeling like yourself again. You don't have to accept debilitating mood changes, exhaustion, painful periods, or worsening hormonal symptoms as "just part of being a woman." If you're struggling with worsening PMS, suspect you're entering perimenopause, or simply want answers about what your body is trying to tell you, book an appointment with Dr. Courtney Holmberg, ND, by calling 647 351 7282 or book online here today.

You eat a healthy meal, and by mid-afternoon your pants feel tight. You wake up with a relatively flat stomach, but by evening you look several months pregnant. You've tried cutting out dairy, reducing gluten, drinking more water, taking probiotics, and maybe even eliminating entire food groups—but the bloating keeps coming back. If this sounds familiar, you're not alone. Bloating is one of the most common digestive complaints I see in clinical practice, particularly among women. It's also one of the most misunderstood. Many people are told their bloating is normal, that they simply need more fibre, or that it's "just IBS." While these explanations may occasionally be true, chronic bloating is often a sign that something deeper within the digestive system—or even the hormonal system—is out of balance. The good news? Daily bloating is not something you simply have to live with. As a naturopathic doctor with a focus in digestive and hormonal health, I view bloating as an important clue. Understanding what's driving your symptoms is the first step toward finding lasting relief. What Is Bloating? Bloating refers to a sensation of fullness, pressure, tightness, or swelling in the abdomen. It may occur with or without visible abdominal distension and can range from mildly uncomfortable to significantly disruptive. Some people experience bloating only after eating, while others notice it gradually worsens throughout the day. For some, it is accompanied by excessive gas, burping, constipation, nausea, abdominal pain, or changes in bowel habits. Because bloating can result from multiple underlying causes, identifying the pattern of your symptoms is often one of the most valuable clues when determining what's actually going on. Common Symptoms That Often Accompany Bloating Chronic bloating rarely occurs in isolation. Many people also experience: Excessive gas Burping Abdominal distension Constipation Diarrhea Food sensitivities Brain fog Fatigue after eating Nausea Abdominal discomfort or cramping Irregular bowel movements PMS related bloating Feeling overly full after meals The combination of symptoms you experience can help point toward the underlying cause. Constipation One of the most common—and most overlooked—causes of bloating is constipation. Many people assume they are not constipated because they have a bowel movement every day. However, constipation isn't defined solely by frequency. You can still be constipated if bowel movements are incomplete, difficult to pass, or if stool is moving too slowly through the digestive tract. When stool remains in the colon longer than it should, bacteria continue fermenting undigested food, producing gas that becomes trapped within the digestive system. The result is often progressive bloating that worsens throughout the day and feels most noticeable by evening. In clinical practice, I frequently see constipation linked to: Low dietary fibre intake Dehydration Hypothyroidism Chronic stress Poor gut motility Hormonal imbalances Gut microbiome dysfunction Addressing the root cause of constipation is often one of the fastest ways to improve chronic bloating. Food Intolerances and Food Sensitivities Food intolerances are another common cause of persistent bloating. Unlike food allergies, which involve an immediate immune response, food intolerances and sensitivities often produce delayed symptoms that can occur hours or even days after eating. This makes identifying triggers on your own incredibly challenging. Common culprits include: Dairy Gluten Eggs Corn Soy Fructose containing foods Artificial sweeteners Beyond digestive symptoms, food sensitivities may also contribute to: Brain fog Fatigue Headaches Skin concerns Joint pain Many patients spend years unnecessarily restricting foods without knowing which ones are actually contributing to symptoms. Strategic testing can often provide much-needed clarity. High FODMAP Foods FODMAPs are fermentable carbohydrates that can be difficult for some individuals to digest and absorb. When these carbohydrates reach the large intestine, bacteria rapidly ferment them, producing gas that contributes to bloating and discomfort. Common high FODMAP foods include: Garlic Onions Wheat Apples Pears Legumes Certain dairy products For individuals with IBS, SIBO, or gut dysbiosis, these foods can trigger significant symptoms. A low FODMAP diet can sometimes be useful as a short-term therapeutic tool to identify triggers. However, it should never be viewed as a long-term solution. The goal is to identify why these foods are causing symptoms rather than avoiding them indefinitely. Irritable Bowel Syndrome (IBS) IBS is one of the most common digestive conditions associated with chronic bloating. In addition to bloating, symptoms may include: Abdominal pain Constipation Diarrhea Alternating bowel habits Excessive gas Food sensitivities Although IBS is often described as a functional disorder, we now understand that many underlying factors can contribute to its development, including: Gut brain axis dysfunction Chronic stress Food sensitivities Gut microbiome imbalances Prior gastrointestinal infections SIBO One of the biggest frustrations for IBS patients is that generic dietary advice rarely provides lasting improvement. Effective treatment requires understanding what is driving symptoms in the first place. Small Intestinal Bacterial Overgrowth (SIBO) SIBO is one of the most common root causes of bloating that often goes undiagnosed. Normally, the small intestine contains relatively low levels of bacteria compared to the colon. In SIBO, bacteria migrate into the small intestine and begin fermenting food before it can be properly digested and absorbed. This fermentation creates excessive gas production and can lead to symptoms such as: Bloating shortly after eating Abdominal distension Constipation Diarrhea Excessive gas Food sensitivities Nutrient deficiencies One hallmark sign of SIBO is bloating that develops within 30 to 90 minutes after meals. Because standard stool testing cannot identify SIBO, breath testing is often required to make an accurate diagnosis. Gut Dysbiosis and Leaky Gut The gut microbiome plays a central role in digestion, immunity, inflammation, metabolism, and hormone regulation. When the balance of beneficial and harmful bacteria becomes disrupted, a condition known as dysbiosis can develop. Factors that contribute to dysbiosis include: Antibiotic use Chronic stress Poor diet Infections Environmental toxins Long term medication use Gut dysbiosis often contributes to bloating, excessive gas, irregular bowel habits, food sensitivities, and digestive discomfort. In some cases, chronic inflammation may also contribute to increased intestinal permeability, often referred to as "leaky gut." When this occurs, partially digested food particles and bacterial byproducts may cross the intestinal barrier and trigger immune activation. This can contribute to symptoms both inside and outside the digestive tract, including: Bloating Fatigue Brain fog Skin concerns Increased food reactivity Hormone Imbalances One of the most overlooked causes of bloating—particularly in women—is hormone imbalance. Many women notice their bloating worsens during the week before their period, around ovulation, or during perimenopause. Hormones influence: Fluid retention Gut motility Inflammation Digestive enzyme production The gut microbiome itself In practice, I commonly see bloating associated with: PMS PMDD Estrogen dominance PCOS Endometriosis Perimenopause Chronic stress and cortisol dysregulation Because hormones and digestion are so interconnected, addressing gut symptoms often requires looking beyond the digestive tract itself. This is one reason many women find that digestive symptoms persist despite extensive dietary changes. If the hormonal driver isn't addressed, the bloating often remains. Swallowing Excess Air Although less complex than some of the causes discussed above, swallowing excess air can contribute significantly to bloating. Common contributors include: Eating quickly Talking while eating Drinking through straws Chewing gum Carbonated beverages While this may not be the sole cause of chronic bloating, it can certainly worsen symptoms when other digestive issues are already present. What Causes Bloating After Eating? One of the most common questions I hear is: "Why do I get bloated immediately after eating?" Bloating that occurs shortly after meals may be associated with: SIBO Food intolerances Digestive enzyme insufficiency Low stomach acid Gut dysbiosis Eating too quickly Swallowing excess air The timing of your symptoms provides valuable information. Bloating that begins within an hour of eating often points toward different underlying causes than bloating that gradually develops throughout the day. When Is Bloating a Sign of Something More Serious? Most bloating is not dangerous. However, certain symptoms warrant prompt medical evaluation. Speak with your healthcare provider if bloating is accompanied by: Unexplained weight loss Blood in the stool Persistent vomiting Fever Severe abdominal pain Family history of colon cancer Family history of ovarian cancer Women experiencing persistent abdominal distension should also be evaluated to rule out gynecological causes. Testing for Chronic Bloating If you've been struggling with bloating for months or years, testing can often provide answers that diet changes alone cannot. Depending on your symptoms, testing may include: SIBO Breath Testing Used to identify bacterial overgrowth within the small intestine. Comprehensive Stool Testing Advanced stool testing can assess: Gut bacteria balance Yeast overgrowth Parasites Inflammation Digestive function Intestinal permeability markers Food Sensitivity Testing Can help identify delayed immune reactions contributing to chronic digestive symptoms. Hormone Testing Particularly useful for women experiencing PMS, irregular cycles, perimenopause symptoms, or hormone-related bloating. Natural Strategies to Reduce Bloating Although treatment depends on the root cause, several foundational strategies can support digestive health. Eat More Mindfully Slow down when eating, chew thoroughly, and avoid rushing through meals. Stay Hydrated Adequate hydration supports digestion, bowel regularity, and healthy gut motility. Move Your Body Daily Physical activity stimulates intestinal contractions and helps move gas and stool through the digestive tract. Address Constipation If constipation is contributing to your bloating, addressing the underlying cause is essential. Reduce Gut-Disrupting Factors Minimizing highly processed foods, chronic stress, unnecessary antibiotic use, and excessive alcohol can help support a healthier microbiome. Identify the Root Cause Perhaps the most important step is determining why you're bloated in the first place. While temporary solutions may provide short-term relief, lasting improvement requires understanding the underlying driver. Bloating Every Day Isn't Normal—And It Is Often Treatable If you're dealing with bloating after meals, a constantly bloated stomach, excessive gas, or digestive discomfort, know that these symptoms are not something you simply have to accept. Chronic bloating is often linked to underlying digestive or hormonal imbalances that can be identified and addressed with the right investigation and treatment approach. For us as Toronto-based Naturopathic Doctors, digestive health is one of the core pillars of care. Through comprehensive assessment, advanced functional testing, and evidence-informed naturopathic medicine, I help patients uncover the root causes of their bloating and create personalized treatment plans designed for long-term results. You shouldn't have to plan your life around your digestive symptoms. Relief is possible when the right cause is identified, and the right support is in place. Book an appointment with Dr. Courtney Holmberg to begin uncovering the root cause of your bloating and start feeling comfortable in your body again. Book an appointment online, or explore virtual care if you're outside of Toronto.

Histamine intolerance affects millions of people every year, and many are unaware of its symptoms or that they may be presented with it. The connective tissues in your body produce histamine to help organs, muscles, and nerves receive and deliver messages to your brain and immune system. For example, histamine signalling will trigger your brain tissues to release pent-up stomach acids to process the foods you eat. It also helps the immune system response by drawing attention to damaged tissue that requires repair. Histamine intolerance comes from an overproduction of the histamine molecule from mast cells and basophils. Most patients with histamine intolerance symptoms present with hyperinflated histamine levels and/or no way to metabolize it, leading to symptoms such as sinus issues, intestinal permeation, chronic headaches, anxiety, fatigue, hives, nausea, and digestive problems. It's important to clarify that histamine intolerances are very different than mastocytosis and mast cell activation syndrome. In these disorders, patients either genetically produce too many mast cells, or the mast cells are hyper-reactive to triggers and release too much daily histamine. These disorders are managed differently and you should always first speak to your doctor or naturopath for a proper diagnosis. While histamine presents widely throughout the body and serves many functions, the abundance of histamine production and uptake inside the digestive system has led researchers to investigate the root causes of excess histamine and the potential for probiotic treatment in stabilizing it. Probiotics for histamine intolerance offer significant opportunities to reduce histamine production and treat histamine intolerance. What is a Histamine? Histamine release occurs naturally inside your body as one of the five major biogenic amines. These five neurotransmitters, dopamine, norepinephrine, epinephrine, serotonin, and histamine, regulate brain functions and endocrine responses. Your cells produce histamine to send signals from your body to your brain as a part of complex biochemical reactions, particularly in digestion and gut motility. They also produce histamine to stimulate the immune response, activating your white blood cells to defend you from allergens or other threats. What Causes Histamine Intolerance? Your body produces histamine for its own use, and when your body can’t produce enough enzymes to break down all the histamine in your system, your histamine levels rise, creating an imbalance. This causes every mast cell in your body to produce the enzyme to break it down, known as diamine oxidase or “DAO”. DAO is responsible for breaking down the histamine compound in your food, and a lack of it creates a histamine-derived imbalance or build-up. Symptoms of elevated histamine include: itchy, flushed skin diarrhea & abdominal pain nausea headaches congestion, running/itchy nose & eyes dizziness heart palpitations/anxiety You may not be aware of it, but you have relatively high amounts of naturally occurring histamine in your diet every day. Foods high in histamine include: Fermented foods and beverages like Sauerkraut and wine Processed meats Aged cheeses Eggplants and spinach Avocados And dried fruits Some foods, including alcohol, energy drinks, black tea, and green tea, block DAO, preventing it from breaking down histamine. While other factors, including genetics and medications, may lower DAO production, diet factors significantly decreased DAO activity. It's important to recognize that a histamine-rich diet enhances the production of gut bacteria in healthy individuals, and is not an unhealthy way to eat. In fact, histamine-rich foods are usually the highest in naturally occurring probiotics. However, when your system falls out of balance, multiple sources of histamine build up and trigger histamine intolerance. The problem arises when dietary intake and bacterial histamine production combine at such staggering levels that human mast cells can't manufacture enough DAO to process the overflow. Disorders like SIBO, or small intestinal bacterial overgrowth, can also exacerbate histamine intolerance because they not only generate their own histamine release but damage the area of the gut lining that creates a large supply of the body’s DAO enzyme. Therefore, people with small intestinal bacterial overgrowth or SIBO are at a much higher risk of presenting with histamine intolerant symptoms. Antihistamine Probiotics vs. Histamine Intolerance Because histamine production is deeply connected to gut bacteria levels, researchers have been looking into histamine-reducing probiotics as a treatment. Treatment of histamine intolerance focuses on ways to limit histamine intake and remove excess histamine from your system. Diet plays an important role in limiting histamine sources, but research has uncovered more about the interplay of gut bacteria in health. Using probiotics for histamine intolerance treatment demonstrates improved outcomes for people suffering from histamine intolerance. So much of your gut health depends on your gut biome. These microscopic bacteria coexist in your digestive tract and help your body break down and process foods. Some strains of beneficial gut bacteria, known collectively as probiotics, display histamine-increasing properties, while others offer histamine-lowering effects. The role of probiotic bacteria in curbing histamine overproduction is a rapidly advancing area of mast cell research, and you can find numerous studies connecting probiotic strains to lowering histamine presentations (or increasing it, for that matter). For example, because histamine is a biogenic amine, physicians have been looking to other naturally occurring biogenic amines, such as lactic acid (and lactic acid-producing bacteria) in its role in histamine intolerances. It may come as a surprise, but any of the common ‘good for you’ probiotics from the lactobacillus family are being investigated as possible aggravators due to their high lactic acid production in food. However, the impacts on histamine depend on the strain, so this does not apply to all strains of a specific species or genus. Alternatively, low-histamine probiotics activate anti-inflammatory agents in the mast cells, help stabilize mast cells, and down-regulating the sensitivity of histamine receptors. Many of these flora are found in the Bifidobacterium genus. Some histamine-lowering strains include: ​​ Lactobacillus plantarum Bifidobacterium longum - helps improve gut barrier and assist in histamine degradation Bifidobacterium infantis Lactobacillus rhamnosus And physicians have been looking into the probiotic lactobacillus reuteri, which they derive from histamine itself Moreover, some histamine-increasing probiotics include: Lactobacillus casei Lactobacillus Bulgaricus Streptococcus thermophilus Lactobacillus delbrueckii Lactobacillus helveticus More so, some probiotics are classified as histamine neutral, or helpful at lower doses, such as lactobacillus acidophilus when taken under 1 billion CFU per day. Histamine-lowering probiotics muffle histamine signals and compounds like the probiotic b. longum display clinical benefits in lab tests against allergies. However, people are different, and we all have unique levels of gut flora in our stomachs and intestines, so probiotic supplements don't have a uniform effect on all demographics. An anti-inflammatory diet regimen that avoids histamine-rich foods lays the basis for reducing histamine levels. Incorporating probiotics that assist in histamine prevention or removal can present meaningful improvement and symptom reduction in patients suffering from histamine intolerance. In all cases, you should work with your doctor to confirm your diagnosis and develop personalized treatments for histamine intolerance. Many factors in your health composition and diet limitations affect treatment and results. For example, consuming the aforementioned DAO-blocking foods, such as alcohol, can create confounding impacts when using probiotics to manage histamine symptoms. Learn More About Histamine Intolerance Treatment Research indicates that readjusting your gut flora with low-histamine probiotics can reduce inflammation, alleviate symptoms, and reduce the effects of seasonal allergies. Treatments that include a low-histamine diet combined with histamine intolerance probiotics work together to improve gut health in people diagnosed with histamine intolerance. Most patients with histamine intolerance tend to have an overabundance or bacterial deficiency in their gut flora. The key to resolving symptoms is to eradicate the aggravates (both food and flora) and restore a healthy bacterial balance to the ecosystem. Furthermore, as described above, taking the wrong probiotic supplement can worsen your condition, as they promote histamine production. If you want to learn more about probiotics or the management of histamine intolerance symptoms, contact our Toronto Naturopath, Dr. Courtney Holmberg ND by calling (647) 351-7282 today.

Collagen is the structural protein that quite literally holds you together. It supports your skin’s firmness, your joints’ resilience, your gut lining, and even your hair and nails. But here’s the reality: collagen loss starts earlier than most people think. By your mid-20s, collagen production declines by about 1% per year—and that decline accelerates with lifestyle, environmental stressors, and hormonal shifts. The result? Fine lines. Skin laxity. Joint discomfort. Slower healing. Thinning hair. The good news: collagen loss is not just inevitable aging—it’s modifiable. In this article, we’ll break down: What’s actually causing collagen loss The biggest hidden accelerators And the most effective, evidence-informed ways to support collagen production—naturally What Actually Causes Collagen Loss? Natural Aging (But It’s Not Just Time) Collagen synthesis slows over time, but what matters more clinically is collagen quality. As we age: Fibres become fragmented Cross-linking becomes impaired Skin loses elasticity—not just thickness Estrogen plays a major role in collagen production. This is why many women notice accelerated skin aging in perimenopause. UV Exposure (The #1 External Collagen Destroyer) UV radiation drives oxidative stress and activates enzymes called matrix metalloproteinases (MMPs) that literally break down collagen. SPF is not just anti-aging—it’s collagen preservation. Even incidental sun exposure (walking, driving) contributes over time. Blood Sugar + Glycation (The Silent Skin Agers) Excess sugar binds to collagen in a process called glycation, creating stiff, brittle fibres (AGEs = advanced glycation end products). This is why patients with insulin resistance often present with: Premature wrinkling Dull, uneven skin Slower wound healing Chronic Stress + Cortisol Elevated cortisol: Suppresses collagen synthesis Increases inflammation Impairs skin barrier repair If your nervous system isn’t regulated, your skin won’t be either. Poor Sleep (Underrated but Critical) Collagen is rebuilt at night through growth hormone release. Even 1–2 nights of poor sleep can: Reduce skin hydration Increase fine lines Slow repair processes Nutrient Deficiencies Collagen production depends on: Vitamin C (cofactor for synthesis) Glycine + proline (amino acids) Zinc + copper (enzymatic support) Low ferritin and low protein intake are two of the most overlooked drivers of poor collagen integrity in women. Smoking + Environmental Toxins Smoking constricts blood flow and increases free radical damage, accelerating collagen breakdown dramatically. Gut Health + Inflammation Emerging research shows that gut permeability and chronic inflammation impair collagen turnover and repair. How to Support Collagen Naturally (Root-Cause Approach) Targeted Collagen Supplementation Not all collagen is created equal. Look for: Hydrolyzed collagen peptides (better absorption) Clinically studied doses (typically 10–20 g/day) Type-specific blends (skin vs joints) and quality brands that are using standardized collagen proteins and not just ground-up animal byproducts. TIP: Collagen works best when paired with vitamin C intake—without it, synthesis is limited. Eat for Collagen Production (Not Just Intake) Collagen isn’t just what you take—it’s what your body can build. Focus on: Protein-rich foods (eggs, fish, legumes if vegetarian) Vitamin C (citrus, berries, peppers) Mineral support (pumpkin seeds, leafy greens) TIP: Think: “feed the fibroblasts”—the cells that actually make collagen. Red Light & Infrared Therapy (Underrated Game-Changer) This is where skincare meets cellular biology. Red and near-infrared light therapy (like LED face masks) work by: Penetrating the skin at specific wavelengths Stimulating mitochondria (ATP production) Activating fibroblasts → increasing collagen synthesis Clinical benefits: Improved skin elasticity Reduction in fine lines Faster healing and reduced inflammation Support for acne and rosacea TIP: The most effective wavelengths for collagen stimulation are: ~630–660 nm (red light) - this brand meets the criteria at a great price point ~830–880 nm (near-infrared) How to use: 10–20 minutes, 3–5x per week Clean skin, before skincare Consistency matters more than intensity Think of red light therapy as a “workout” for your skin cells. Optimize Sleep (Non-Negotiable) Support collagen repair by: Keeping your room cool and dark Avoiding screens 60 minutes before bed Supporting circadian rhythm (morning light exposure) Blood Sugar Regulation To prevent glycation: Prioritize protein with meals Avoid frequent high-sugar spikes Use movement after meals Stress Regulation = Skin Strategy Support your nervous system with: Breathwork Adaptogens (when appropriate) Nervous system regulation practices Professional Guidance + Testing If collagen loss feels accelerated (hair loss, skin aging, joint issues), consider assessing: Ferritin Vitamin D B12 Thyroid function Sex hormones Blood glucose + insulin The Bottom Line: Collagen Is Built—Not Just Lost Collagen decline isn’t just about aging—it’s about: Cellular energy Nutrient status Hormonal balance Inflammation levels When you address these root causes, you don’t just “slow aging”—you improve how your body functions at every level. If You’re Noticing: Early skin aging Hair thinning Joint discomfort Slower healing …it’s worth looking deeper. A personalized, root-cause approach can help you restore collagen production from the inside out. If you're concerned about premature aging, joint discomfort, or loss of collagen, personalized guidance can help. To explore collagen-boosting for your needs, contact Dr. Courtney Holmberg, a Toronto-based naturopathic doctor, at (647) 351-7282 or book a consultation today.

Many women are surprised to learn that perimenopause often begins in their late 30s or early 40s—sometimes years before their menstrual cycles actually stop. During this transition, ovarian hormone production becomes more irregular. Estrogen, progesterone, and other signalling hormones fluctuate, which can lead to symptoms that feel confusing or unpredictable. As a naturopathic doctor who focuses on women’s hormone health, I see many patients who sense that something has changed in their bodies—but aren’t sure why. The good news is that there are highly effective natural therapies that can support your body through this transition. Understanding which symptoms occur at which stage of perimenopause is the key to choosing the most helpful natural treatments. What Is Perimenopause? Perimenopause is the hormonal transition leading up to menopause. It typically lasts 5–10 years and is characterized by fluctuating estrogen levels and a gradual decline in progesterone. The hormonal shifts do not happen all at once. Instead, perimenopause progresses through phases that tend to produce different patterns of symptoms. Recognizing these patterns helps us choose therapies that work with your physiology rather than against it. Early Perimenopause (Often Begins Late 30s–Early 40s) The earliest stage of perimenopause is usually driven by declining progesterone and irregular ovulation. Many women still have regular periods during this stage, which is why symptoms are often overlooked. Common symptoms Shorter menstrual cycles PMS that feels worse than it used to Breast tenderness Anxiety or mood swings before your period Poor sleep Increased stress sensitivity Early waking (3–4 AM insomnia) Fatigue despite adequate sleep These symptoms are typically related to low progesterone and stress hormone dysregulation. Natural therapies that work well in early perimenopause 1. Adaptogenic herbs (for stress resilience and energy) Adaptogens help regulate the HPA axis, which becomes more sensitive as progesterone declines. Helpful options include: Rhodiola Panax ginseng Ashwagandha These natural herbs can support energy, cognitive function, and resilience to stress—while also helping regulate sleep. 2. Magnesium and nervous system support Magnesium glycinate or bisglycinate is one of the most effective nutrients for early perimenopause symptoms. It can help improve: sleep quality muscle tension stress response PMS symptoms Many women notice improvements in sleep within weeks. 3. Blood sugar stability Blood sugar swings can significantly worsen hormonal symptoms. Prioritizing: protein with every meal whole foods fibre-rich carbohydrates helps stabilize cortisol and estrogen fluctuations. Mid-Stage Perimenopause (Hormone Fluctuations Become More Noticeable) As ovarian signalling becomes more irregular, estrogen levels may swing higher and lower than normal. This hormonal volatility often produces new symptoms. Common symptoms Mood swings Irritability heavier or irregular periods breast tenderness headaches or migraines bloating brain fog worsening PMS This stage is often described as estrogen dominance relative to progesterone, meaning progesterone levels decline more quickly than estrogen. Natural therapies that support this stage 1. Cruciferous vegetables and estrogen metabolism support Supporting healthy estrogen metabolism can reduce symptoms related to hormonal imbalance . Helpful nutrients include: DIM Calcium-D-glucarate Sulforaphane from cruciferous vegetables These compounds help the body process and eliminate excess estrogen metabolites. 2. Pine bark extract (Pycnogenol) Pine bark extract contains powerful flavonoids that support: circulation inflammation reduction cognitive function Research suggests it may improve: brain fog fatigue mood joint discomfort Many patients also notice improvements in mental clarity and energy. 3. Fibre and healthy dietary fats Dietary fats and fibre support hormone signalling, cell membrane health, and hormone metabolism through the digestive tract. They also help stabilize blood sugar. Helpful foods include: flaxseed pumpkin seeds walnuts olive oil omega-3-rich fish These nutrients help stabilize inflammation and hormone signalling. Late Perimenopause (Closer to Menopause) In the later stages of perimenopause, estrogen levels begin to decline more consistently, leading to the symptoms many people associate with menopause. Common symptoms hot flashes night sweats sleep disruption vaginal dryness lower libido joint pain more significant brain fog fatigue These symptoms are often driven by declining estrogen and thermoregulatory instability in the brain. Natural therapies that support late perimenopause 1. Black cohosh for hot flashes and night sweats Black cohosh is one of the most studied herbal therapies for menopausal symptoms. Research suggests it may help reduce: hot flash frequency night sweats sleep disruption It appears to work by influencing thermoregulatory centers in the brain, helping stabilize body temperature. 2. Phytoestrogen-rich foods Certain plant compounds can provide gentle estrogen-like activity. Foods rich in phytoestrogens include: soy (tofu, tempeh, edamame) flaxseed legumes For some women, these foods help reduce hot flashes and support hormone balance. 3. Vaginal and tissue support Declining estrogen can affect vaginal and urinary tissues. Helpful natural therapies include: sea buckthorn oil Hyaluronic acid vaginal suppositories omega-3 fatty acids These support tissue hydration and elasticity. Lifestyle Factors That Strongly Influence Perimenopause Symptoms While supplements can help, lifestyle factors are often the most powerful tools for managing perimenopause. Key areas to focus on include: Sleep:  Prioritize consistent sleep routines and minimize evening screen exposure. Strength training and resistance exercise support metabolic health, bone density, and insulin sensitivity. Stress regulation:  Meditation, breathwork, and time outdoors can significantly stabilize cortisol rhythms. Nutrition:  A whole-foods diet rich in protein, fibre, and healthy fats supports hormone metabolism. Why Protein Intake Matters During Perimenopause One of the most overlooked strategies for supporting hormone balance during perimenopause is adequate protein intake. During this transition, women naturally begin to experience changes in muscle mass, metabolism, and insulin sensitivity. Estrogen plays an important role in maintaining lean muscle, and as levels fluctuate, many women notice: increased abdominal weight gain reduced muscle mass lower energy levels increased blood sugar swings stronger cravings for carbohydrates Protein is one of the most effective nutritional tools for stabilizing these changes. A diet that includes sufficient protein helps support: muscle preservation metabolic health blood sugar stability satiety and appetite regulation hormone signaling How Much Protein Do Women Need During Perimenopause? Most women benefit from consuming more protein than they did in their 20s and early 30s. Research suggests women in midlife may benefit from approximately: 1.0 - 1.2 grams of protein per pound of body weight per day For many women, this works out to roughly: 120–150 grams of protein daily, depending on body size and activity level. Distributing protein evenly throughout the day can help optimize muscle protein synthesis and blood sugar regulation. A helpful structure is aiming for 30–45 grams of protein per meal. Best Protein Sources for Hormone and Metabolic Health Prioritizing whole-food protein sources supports both hormone metabolism and nutrient intake. Helpful options include: Animal-based sources: eggs (egg whites are even better) poultry fish and seafood grass-fed meats Greek yogurt or cottage cheese Plant-based sources: lentils chickpeas tofu and tempeh hemp seeds pumpkin seeds Combining protein with fibre-rich carbohydrates and healthy fats can help stabilize blood sugar and support sustained energy. Protein and Perimenopause Weight Gain Many women notice weight changes during perimenopause, particularly increased abdominal fat. While hormones play a role, muscle loss and metabolic slowdown are also major contributors. Higher protein intake helps: preserve lean muscle mass improve insulin sensitivity increase satiety support fat metabolism Strength training combined with adequate protein intake is one of the most effective strategies for maintaining metabolic health during midlife. When Hormone Therapy May Be Appropriate Natural therapies are incredibly helpful for many women, but they are not the only option. In some cases, bioidentical hormone therapy  can provide meaningful relief—especially for severe symptoms such as intense hot flashes or persistent insomnia. Modern hormone therapy, when prescribed appropriately and individualized to the patient, can be a safe and effective tool. In my practice, many women benefit from a combined approach, using both natural therapies and hormone therapy when appropriate. The Most Important Thing to Remember Perimenopause is not a disease—it’s a natural hormonal transition. However, that doesn’t mean you have to suffer through the symptoms. With the right combination of testing, lifestyle support, and targeted therapies, most women can move through perimenopause feeling energized, balanced, and supported. The other most important thing to remember is that you do not have to struggle through hot flashes, mood swings, broken sleep or brain fog. There are many supportive therapies available for you, and I’ll encourage you to reach out to discuss the best options for you through this phase of life. To schedule a consultation with Dr. Courtney Holmberg , ND, visit us online or give the clinic a call at 647-351-7282 today. Let’s find the right support for you.

As a naturopathic doctor in Toronto, I see patients every week who are frustrated with their skin. Acne that won’t clear. Rosacea that flares without warning. Eczema, psoriasis, or skin that just looks dull and inflamed, no matter what products they use. Most of them have tried everything—prescriptions, expensive skincare, facials, elimination diets—only to feel stuck. I approach skin health differently. I don’t treat skin as a surface problem. I treat it as a reflection of what’s happening internally. Clear, healthy skin comes from addressing the root cause. How I Approach Skin Concerns as a Naturopathic Doctor Naturopathic medicine focuses on identifying why your skin is reacting the way it is. Instead of suppressing symptoms, I look at the systems that influence skin health the most: Hormonal balance Gut and digestive health Inflammation and immune function Nutrient status Liver detoxification Stress and cortisol levels Skin issues are rarely random. When we connect the dots and correct the underlying imbalances, the skin almost always responds. Skin Conditions I Commonly Treat in My Toronto Practice I work with patients experiencing a wide range of skin concerns, including: Acne (adult acne, hormonal acne, inflammatory acne) Eczema and dermatitis Rosacea Psoriasis Chronically dry, itchy, or sensitive skin Stress-related or gut-driven skin flares Many of my patients come to me after years of short-term fixes. My goal is always long-term improvement and skin that stays calm, clear, and resilient. The Role of Diet in Skin Health What you eat has a direct and measurable impact on your skin. Blood sugar swings, inflammatory foods, and nutrient deficiencies often show up as breakouts, redness, or dullness. When I support skin health through nutrition, this often includes: Reducing refined sugar and ultra-processed foods Identifying food triggers like dairy or gluten when clinically appropriate Increasing antioxidant-rich vegetables and fruits Supporting hydration and fibre intake Including healthy fats such as olive oil, nuts, seeds, and avocado Supporting gut health with probiotics or fermented foods These changes don’t need to be extreme to be effective. Small, strategic shifts can make a noticeable difference in skin clarity within weeks. Hormonal Imbalances and Skin Breakouts Hormones play a huge role in skin health—especially for women. If your breakouts are cyclical, worsen around your period, or start during perimenopause, postpartum, or high-stress periods, hormones are often involved. Hormonal skin support may include: Comprehensive hormone testing Herbal medicine, such as chaste tree (Vitex) or DI, M when appropriate Supporting liver function to improve hormone metabolism Addressing stress and cortisol dysregulation When hormones are better regulated, oil production settles, inflammation decreases, and skin becomes more predictable. Gut Health and the Gut–Skin Connection There is a strong link between digestion and skin. Acne , rosacea, eczema, and psoriasis are frequently associated with gut imbalances and inflammation. I often assess gut health when patients have skin concerns alongside symptoms like: Bloating or irregular digestion Food sensitivities Fatigue or brain fog Signs of leaky gut By supporting gut integrity and the microbiome through targeted nutrition, probiotics, improving digestive regularity, and addressing possible overgrowths, we often see significant improvements in skin tone and texture. Supporting Detox Pathways for Healthier Skin Your skin is one of the body’s detoxification organs. When detox pathways are overloaded or sluggish, congestion and inflammation can show up on the skin. Rather than aggressive cleanses, I focus on gentle, sustainable detox support, such as: Liver-supportive herbs like milk thistle or dandelion Adequate hydration and fibre intake Supporting lymphatic flow through movement or dry brushing Therapeutic sweating when appropriate When detox pathways are supported properly, the skin often clears without needing extreme interventions. Natural Topical Skin Care That Supports Healing Internal work is foundational, but topical care still matters. I typically recommend skincare that supports the skin barrier rather than stripping or irritating it. This often includes: Avoiding synthetic fragrance and harsh preservatives Using gentle, non-comedogenic oils like jojoba or rosehip Choosing mineral-based sunscreen (zinc oxide) Reducing over-cleansing and over-exfoliation Less irritation on the surface allows the internal work to do its job more effectively. Stress, Cortisol, and Skin Inflammation Chronic stress is one of the most overlooked drivers of skin issues. Elevated cortisol can worsen acne, eczema, rosacea, and psoriasis while also disrupting sleep, digestion, and hormones. In practice, stress support may include: Adaptogenic herbs Nutrient support, such as magnesium Sleep optimization strategies Nervous system regulation and lifestyle changes When stress is better managed, skin flares often reduce dramatically. A Root-Cause Approach to Skin Health I don’t believe in chasing symptoms or trends. I believe in understanding the body and supporting it properly. When skin is treated as part of a larger system—not a standalone problem—the results tend to be deeper, longer-lasting, and far more sustainable. Looking for a Naturopathic Doctor for Skin Health in Toronto? If you’re searching for a naturopathic doctor in Toronto for acne, eczema, rosacea, or chronic skin concerns, I offer a root-cause, evidence-informed approach designed to support skin health from the inside out. My work focuses on comprehensive assessment, targeted testing, and personalized treatment plans that reflect your unique physiology—not a one-size-fits-all protocol. Healthy skin starts internally. If you’re ready to understand why your skin is reacting and what it actually needs to heal, you can book a consultation with Dr. Courtney Holmberg to get started. Give us a call at 647 351 7282 today.

A Toronto naturopath’s perspective on getting to the root of chronic bloating, gas, and bowel changes If you’ve been told you have IBS, you’re not alone — and you’re not imagining your symptoms. IBS can take over your day-to-day life: persistent bloating , uncomfortable gas, unpredictable bowel movements, and food reactions that never seem consistent. Many of my patients come to me feeling dismissed after being told “everything looks normal” or that they’ll just have to manage symptoms long-term. But here’s the question I ask almost every new patient with chronic digestive symptoms: What if your IBS isn’t actually IBS at all? In clinical practice, I see this over and over again — people diagnosed with IBS who are actually dealing with Small Intestinal Bacterial Overgrowth (SIBO). Identifying this distinction can be the turning point between endless symptom management and real, lasting improvement. Let’s walk through how IBS and SIBO overlap, the signs you may be misdiagnosed, and how we approach natural SIBO treatment in Toronto using root-cause medicine. IBS vs SIBO: Why These Conditions Are So Often Confused Common IBS Symptoms IBS is a symptom-based diagnosis, meaning it’s diagnosed by what you feel — not by a definitive test. Symptoms commonly include: Bloating and abdominal discomfort Constipation, diarrhea, or alternating between the two Gas, cramping, and urgency Fatigue and food sensitivities Normal findings on imaging and routine labs Because there’s no clear biomarker, IBS is often diagnosed after more serious conditions are ruled out. How SIBO Hides Behind the IBS Label SIBO occurs when bacteria that belong in the large intestine migrate and overgrow in the small intestine, where they interfere with digestion and nutrient absorption. Research shows that 33–78% of patients diagnosed with IBS test positive for SIBO — a staggering overlap. Different types of SIBO often mimic specific IBS patterns: Hydrogen-dominant SIBO  → diarrhea (IBS-D) Methane-dominant SIBO (IMO)  → constipation (IBS-C) Hydrogen sulphide SIBO  → bloating, gas, urgency, loose stools The key difference? SIBO explains why symptoms are happening. IBS often doesn’t. 5 Signs Your IBS May Actually Be SIBO In my Toronto clinic, these are the patterns that raise immediate red flags: Severe bloating shortly after eating (often within 30–90 minutes) Symptoms that worsen with probiotics or high-fibre foods Constipation that doesn’t respond to magnesium or fibre Diarrhea triggered by carbs, fruit, or FODMAP foods IBS that started after food poisoning, travel illness, or antibiotics If this sounds familiar, deeper testing is often warranted. What Causes SIBO in the First Place? SIBO isn’t about “bad bacteria.” It’s about gut defences breaking down. Your digestive system relies on several mechanisms to keep bacteria where they belong: Adequate stomach acid Digestive enzymes and bile flow A healthy ileocecal valve Strong gut motility via the Migrating Motor Complex (MMC) When one or more of these systems falter, bacteria can accumulate in the small intestine. Common Root Causes I See Clinically Low stomach acid (often with stress, aging, or PPI use) Slowed gut motility Post-infectious IBS after food poisoning (what appears to be the most common root cause) Scar tissue or adhesions from surgery Chronic stress and nervous system dysregulation Immune imbalances, including early-life factors This is why SIBO treatment must go beyond antibiotics/antimicrobials alone. How We Test for SIBO in Canada Accurate testing matters — guessing leads to relapse. SIBO Breath Testing Lactulose breath testing is the most accessible and validated option in Canada Measures hydrogen and methane gas production over time Can be done via clinic-based or mail-in testing in Toronto While jejunal aspirate testing is considered the gold standard, it’s rarely used outside of research settings. Additional testing (stool analysis, nutrient markers, and inflammatory markers) often helps uncover why SIBO developed in the first place. Natural SIBO Treatment: A Root-Cause Approach There is no one-size-fits-all SIBO protocol — and that’s where many people go wrong. In my practice, treatment is individualized, phased, and strategic. Step 1: Reduce the Overgrowth Depending on the type of SIBO: Prescription options like rifaximin Or herbal antimicrobials (oregano, berberine, neem, allicin) Step 2: Address Biofilms Targeted supplements can help disrupt bacterial biofilms, improving naturopathic treatment success. Step 3: Restore Gut Motility Supporting the MMC is essential to prevent relapse: Natural or prescription prokinetics Nervous system regulation Meal spacing and circadian rhythm support Step 4: Strategic Dietary Support Short-term low-FODMAP or elemental approaches Avoiding long-term restriction to protect the microbiome Step 5: Fix the Root Causes This may include: Digestive enzyme or stomach acid support Stress and vagal tone regulation Gut lining repair Step 6: Thoughtful Reintroduction of Probiotics Timing matters — probiotics are not always helpful early in SIBO treatment, and the type of probiotics use will matter! Is Your IBS Actually SIBO? Here’s What to Do Next If you’ve been living with chronic IBS symptoms and nothing seems to work, here are your next steps: Work with a practitioner trained in SIBO and functional gut health Ask about SIBO breath testing in Toronto Rule out other conditions such as celiac disease or IBD Address digestion, motility, and nervous system health — not just bacteria Uncovering SIBO often shifts patients from symptom management to true healing. You Don’t Have to Live With “Just IBS” For many patients, asking “Is my IBS actually SIBO?” is the moment everything changes. With the right testing, targeted treatment, and a root-cause approach, digestive health can improve — even after years of frustration. If you’re looking for natural SIBO treatment in Toronto, support is available. I work closely with patients to uncover what’s driving their symptoms and build a plan that’s realistic, evidence-based, and sustainable. Your gut isn’t broken — it just needs the right approach. Book a consultation with Dr. Courtney Holmberg to discuss more today at 647 351 7282.

Environmental Toxins That Disrupt Hormones: How Phthalates Impact Reproductive Health The Hidden Hormone Disruptors in Everyday Life You hear a lot about “toxins” these days, but some environmental chemicals truly deserve your attention. One group in particular — phthalates — are among the most concerning environmental toxins that disrupt hormones. These chemicals are powerful endocrine disruptors , meaning they interfere with your body’s natural hormonal communication. Over time, this interference can lead to hormonal imbalance and impact both male and female reproductive health. Research now links phthalates to various hormone-related challenges, including changes in fertility, estrogen balance, and even thyroid function. Understanding what these toxins are, where they come from, and how to reduce exposure is the first step toward protecting your hormone health. What Are Phthalates and Where Do They Come From? Phthalates are a family of industrial chemicals used to make plastics soft and flexible and to help fragrances last longer in products. The issue? They’re everywhere — and they often hide in plain sight. You’ll find phthalates in: Vinyl flooring and shower curtains Plastic food containers and packaging Children’s toys Scented products like lotions, shampoos, and air fresheners Whenever you see the word “fragrance” on a label, it often conceals a mix of hormone-disrupting chemicals — including phthalates. Because phthalates don’t bind tightly to the materials they’re added to, they easily leach into air, dust, and food, entering your body through your skin, lungs, or digestion. This results in constant, low-level exposure, which research now shows can have measurable effects on hormonal health. How Phthalates Disrupt Hormones Phthalates are classified as endocrine-disrupting chemicals (EDCs )  — environmental toxins that mimic or block your natural hormones. Your endocrine system relies on precise hormone signalling to regulate reproduction, metabolism, and overall balance. Phthalates can: Mimic estrogen , causing the body to over-respond Block hormone receptors , preventing normal hormone activity Disrupts hormone synthesis , altering how your body produces and metabolizes hormones This interference creates confusion in your hormonal system and may contribute to symptoms like irregular cycles, reduced fertility, and thyroid dysfunction. Effects on Female Reproductive Health Phthalates are especially concerning for women because of their estrogen-like activity. Research shows that high levels of exposure may contribute to: Hormonal Imbalance:  Lower estrogen, higher FSH, and disrupted ovulation patterns Ovary and Egg Health:  Damage to ovarian follicles, resulting in fewer and lower-quality eggs Fertility and IVF Outcomes:  Reduced pregnancy success rates, particularly in women undergoing fertility treatments Reproductive Disorders:  Increased risk of PCOS, endometriosis, and premature ovarian insufficiency Effects on Male Reproductive Health These toxins that affect hormones also impact male reproductive function. Studies link phthalate exposure to: Lower Testosterone:  Reduced hormone production and signalling Poor Sperm Quality:  Lower count, motility, and abnormal morphology Sperm DNA Damage:  Fragmentation that may affect embryo development and fertility outcomes Developmental Concerns:  Prenatal exposure may alter reproductive organ development in male infants How to Reduce Exposure to Hormone-Disrupting Chemicals The good news? Small, intentional choices can significantly lower your contact with environmental toxins like phthalates and support natural hormone balance. Here’s how: Avoid vinyl plastics:  Choose fabric shower curtains and silicone or wooden toys over vinyl. Read labels carefully:  Skip products that list “fragrance” or “parfum.” Opt for brands that disclose ingredients or use essential oils. Ditch plastic for glass: Never microwave food in plastic containers or plastic wrap — use glass or ceramic instead. Improve indoor air quality:  Open windows regularly and use an air purifier to reduce airborne chemicals. Choose clean beauty and home products:  Look for “phthalate-free” and “paraben-free” labels whenever possible. When in doubt, buy fragrance-free. These practical steps reduce your toxic burden and help maintain your body’s natural hormonal rhythm. Work with Dr. Courtney Holmberg, ND — Naturopathic Doctor in Toronto Navigating environmental toxins and hormones can feel overwhelming, but you don’t have to do it alone.   Dr. Courtney Holmberg, a  Toronto-based naturopathic doctor , helps patients across Ontario identify root causes of hormonal imbalance, lower toxin exposure, and restore hormone health using evidence-informed natural medicine. If you’re ready to uncover what’s impacting your hormones and take a proactive approach to reproductive wellness, book an appointment  today.

Digestive discomfort is one of the most common reasons patients seek naturopathic care. Whether you’re struggling with bloating, irregular bowel movements, heartburn, or abdominal pain, these symptoms can affect more than just your digestion — they can impact your mood, focus, and overall quality of life. As a Toronto naturopathic doctor , I see firsthand how often conventional treatments only address the surface — suppressing symptoms without asking why the problem exists in the first place. Naturopathic medicine takes a different approach: identifying the root cause of digestive concerns to create lasting relief and restore balance. Understanding Digestive Disorders Through a Naturopathic Doctor's Lens Digestive issues can appear in many forms — from mild, occasional discomfort to chronic conditions like IBS, food sensitivities, acid reflux, or leaky gut syndrome. These symptoms often point to underlying imbalances such as: Dysbiosis (gut microbiome imbalance) Low stomach acid or enzyme insufficiency Food sensitivities or intolerances Stress or nervous system dysregulation Inflammation or immune system activation In naturopathic medicine, we view digestion as a central pillar of overall health. The gut communicates directly with your brain through the gut-brain axis, meaning that emotional stress can impact digestion — and digestive dysfunction can affect mood, focus, and mental clarity. By addressing both the physical and emotional components of digestive issues, naturopathic care helps create long-term improvements, not temporary fixes. Nutrition Therapy for Digestive Health Diet is one of the most powerful tools for healing the digestive system. The foods you eat directly influence your gut microbiome and immune system function. A naturopathic approach focuses on: Anti-inflammatory eating:  Reducing foods that trigger irritation (like processed foods, refined sugars, and alcohol) while emphasizing whole, nutrient-dense foods such as leafy greens, omega-3 fatty acids, and turmeric. Supporting the microbiome:  Incorporating prebiotic and probiotic foods such as fermented vegetables, kefir, and fibre-rich plants to promote healthy bacterial balance. Optimizing digestion:  Supplementing with digestive enzymes when necessary to help the body properly break down and absorb nutrients. Restoring gut integrity:  For conditions like leaky gut, nutrients such as L-glutamine, collagen, and bone broth can help repair the intestinal lining and support immune regulation. Herbal Remedies for Digestive Support Herbal medicine is one of the oldest and most effective tools in naturopathic practice for improving digestion . Some of the most commonly used botanicals include: Peppermint oil:  Reduces abdominal pain and bloating in IBS. Ginger:  Supports healthy digestion and reduces nausea. Chamomile:  Soothes the digestive tract and eases stress-related gut symptoms. Slippery elm and marshmallow root:  Coat and protect the stomach lining, reducing irritation and supporting tissue healing. These herbs can be used in teas, tinctures, or supplements — and are often combined for synergistic benefits. Probiotic Therapy for Digestive Health Your gut is home to trillions of microorganisms that collectively make up your gut microbiome — an ecosystem essential for digestion, immune function, and even mental well-being. When this balance is disrupted (a state called dysbiosis), symptoms such as bloating, gas, constipation , loose stools, and food intolerances can develop. Probiotic therapy  is a foundational tool in naturopathic digestive care. By reintroducing beneficial bacteria, probiotics help: Restore healthy microbial balance after antibiotics or illness Support proper digestion and nutrient absorption Reduce inflammation in the intestinal lining Improve bowel regularity Strengthen immune function and decrease infection risk Enhance mood and focus through the gut-brain connection Different probiotic strains provide different benefits. For example: Lactobacillus plantarum  – supports intestinal barrier repair and reduces bloating Bifidobacterium longum  – helps regulate bowel movements and improve mood Saccharomyces boulardii  – beneficial for antibiotic recovery and traveller’s diarrhea Lactobacillus rhamnosus GG  – supports immune modulation and gut integrity A well-designed probiotic plan is tailored to your individual needs, taking into account your specific symptoms, medical history, and current microbiome balance. In my Toronto practice, I often combine probiotic therapy with dietary strategies and microbiome testing to ensure the right strains and doses are chosen for your specific needs. Personalized Testing and Individualized Treatment Plans No two digestive systems are the same. Many chronic digestive issues stem from unidentified food sensitivities or microbiome imbalances that can’t be seen through standard testing. At my Toronto clinic, I often use tools like: SIBO testing to rule out bacterial overgrowths - one of the most common causes of IBS-like symptoms Food sensitivity testing  to identify triggers causing inflammation. Comprehensive stool analysis,  such as the GI MAP or GI 360, to evaluate microbiome diversity, digestive enzyme output, and inflammatory markers. Hormone and stress assessments  to understand how cortisol and the nervous system may be influencing digestion. This data-driven approach allows for a personalized treatment plan that supports your unique biology and helps you heal faster. Taking the Next Step Toward Better Digestion Digestive health is about more than symptom control — it’s about restoring function, improving nutrient absorption, and enhancing overall vitality. As a Naturopathic Doctor in Toronto with a clinical focus in digestive health, I help patients uncover the root causes of bloating, IBS, reflux, and fatigue through in-depth testing, individualized nutrition plans, and natural therapies. If you’ve been struggling with ongoing digestive symptoms and want a more comprehensive approach, I’d love to help you get to the root cause and start feeling your best again. 👉 Book a consultation with  Dr. Courtney Holmberg , ND ,   to begin your journey toward better digestion and lasting wellness.