Your thyroid is arguably one of the most important endocrine organs in the body. Sitting comfortably in the base of the neck, this exocrine gland outputs three major hormones: thyroxine (aka inactive T4), triiodothyronine (aka active T3) and calcitonin. These hormones essentially determine the body's metabolic rate at which it burns fuels like fat and sugar, synthesizes proteins, regulates heart rate, and controls development - especially in infancy. They also influence the hypothalamic-pituitary-adrenal axis which determines your response and resilience to stress.
Thyroid disorders are one of the most common hormonal issues plaguing Canadians, with hypothyroidism affecting roughly 2 in every 100 people, and prevalence rates increase with age.
What causes thyroid Dysfunction
low iron - the enzyme known as thyroid peroxidase, which is essential to thyroxine production is largely heme dependent. That means if your iron is low, your thyroid will have a hard time making T4
infection - inflammation of the thyroid gland, also known as thyroiditis, is often secondary to bacterial and viral infections like Staphylococcus aureus, Streptococcus, mycobacteria, and fungi environment - heavy metals, chemical drug toxicity, synthetic hormones (especially high doses during fertility treatment) and BPAs/thermal receipts have all been linked to thyroid disorders adrenal fatigue - the hypothalamic-pituitary-adrenal axis has a closely linked relationship with thyroid function. High levels of cortisol output slow deiodinase activity, resulting in decreased T4 to T3 conversion, and increased symptomatology of hypothyroidism. iodine + selenium deficiency - iodine deficiencies remain the number one cause of goiter formation worldwide. Furthermore, selenium deficiencies have been shown to slow T3 conversion by up to 80% insulin resistance - research from the American Thyroid Association confirms that individuals with insulin resistance have also been shown to have an increased number of thyroid nodules, and medications that support blood sugar control actually shrink the size of thyroid nodules. Furthermore, T4 to T3 conversion has been shown to be slowed by up to 50% in those with insulin resistance. autoimmunity - Hashimoto's and Grave's disease are as a result of autoimmune insult on the thyroid gland, enzymes, and receptors Believe it or not, your thyroid medication can also be making your thyroid disorder worse. Increases levels of T4 in the system, without proper enzyme activity and support towards T3 production, can lead to T4 moving down the reverse T3 pathway, which inherently further inhibits thyroid function. Talk to Dr. Holmberg, ND about having your reverse T3 levels checked. Testing your ThyroidThe single most important thing to remember when screening for thyroid disorders is that while blood work is an essential part of uncovering underlying pathologies, it is not fool proof. Symptoms should always be evaluated first, and lab markers should be used to further confirm or deny underlying dysfunction.
Secondly, there are some things to remember when running your blood work. 3 Rules for an Accurate Diagnosis #1 Always test your thyroid in the morning #2 Always test your full thyroid panel (TSH, T4 and T3) #3 Listen to your symptoms first, labs second The most important blood markers to evaluate when assessing for a thyroid disorder are as follows:
Secondary to blood work, it is also important to assess your basal body temperature roughly 3 hours after waking. Temperatures under 98 degrees F can indicated slowed metabolic function. Treatment of Thyroid Disorders The first step to understanding and treating any hormonal concern is understanding if the issue comes from a supply issue (lack of building blocks to make the hormones), a conversion issue (inability to activated/utilize them), or if theres an absolute deficiency (in which case you much replace them). Goals of treatment include understanding the mechanism as to why the thyroid dysfunction is occurring, and implementing the proper diet, lifestyle, and supplement routine to correct the imbalance.
Therapies often include: - Herbal medicine: support production and conversion, decrease antibodies in Grave's/Hashimotos - Nutrient replacement: provide the building blocks (like zinc, iodine, selenium) to create hormones - Diet and Lifestyle: eliminate food intolerances and promote healthy metabolism through diet - Bio-identical Hormone Replacement Therapy (Natural Desiccated Thyroid) when necessary * No two people are the same. Thyroid issues can present differently in everyone. Furthermore, lab testing is not always reliable. Some people exhibit symptoms of "subclinical hypothyroidism" well before lab tests become abnormal. If you think you may have thyroid issues, or have been diagnosed with hypothyroidism or Grave's disease and wish to look at alternative and or supportive therapies to your medication(s), please use the link below to connect with Dr. Holmberg, ND or call the office at 647 351 7282
* Dr. Holmberg, ND is a licensed medical provider of Bio-identical hormone replacement therapy
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