Hypothyroidism diet tips: Some foods, especially cruciferous vegetables (cabbage, kale, Brussels sprouts, broccoli, and cauliflower) contain natural goitrogens, compounds that can cause the thyroid gland to enlarge by interfering with thyroid hormone synthesis. Cooking has been reported to inactivate this effect in Brussels sprouts. Cassava, a starchy root that is the source of tapioca, can also have this effect. Other goitrogens include corn, sweet potatoes, lima beans, and soy. Some practitioners recommend that people with under-active thyroid glands avoid these foods, even though most have not been proved to cause hypothyroidism in humans.
If you decide that you want to start treatment, your doctor will order lab tests for you to have completed at a lab in your area. We work with national lab companies to ensure that everyone has access to a lab near them. The lab tests will confirm whether you are experiencing a hormonal imbalance that indicates hypothyroidism. The tests take only 30 minutes to complete and you will receive your results within 3 business days.
Hypothyroidism is a very common condition. Approximately 3% to 4% of the U.S. population has some form of hypothyroidism. This type of thyroid disorder is more common in women than in men, and its incidence increases with age. Examples of common causes of hypothyroidism in adults include Hashimoto's thyroiditis, an autoimmune form of overactive thyroid, lymphocytic thyroiditis, which may occur after hyperthyroidism (underactive thyroid), thyroid destruction from radioactive iodine or surgery, pituitary or hypothalamic disease, medications, and severe iodine deficiency.
The normal values for the serum T4:T3 ratio are seldom discussed in the literature because measurement of serum T3 levels is not a recommended outcome in hypothyroidism (1). In a large study of approximately 3800 healthy individuals (4), the serum free T4:free T3 ratio was around 3, as opposed to a ratio of 4 in more than 1800 patients who had undergone thyroidectomy and were receiving l-thyroxine monotherapy. The corresponding serum free T4:free T3 ratio in patients continuing to receive desiccated thyroid is not well-defined, but the serum total T4:T3 ratio is known to be low (28, 50). In one study, the serum total T4:total T3 was about 40 in patients receiving desiccated thyroid and about 100 in those taking l-thyroxine monotherapy (60). Of course, this is affected by the timing of blood collection in relation to the timing of l-triiodothyronine administration, which is not commonly reported. Other key factors are the well-known poor reproducibility of the serum total T3 assay (61) and the interferences with direct measurement of free T3 (5).
Do you see “gluten-free”, “dairy-free” etc. popping up at the health stores today? This is because many people get off the “big five” (gluten, dairy, corn, eggs and soy) and experience significant changes. To find the culprits, I always start off with an Elimination Diet (I teach how to do the Elimination Diet at this free workshop) and this produces clear, unbiased results. You can also get a food intolerance test (not allergy; it’s different) done but they are far from accurate. Gluten is an infamous food for contributing to thyroid conditions, and eliminating it is key. However, often times, you would need to cut out more than just gluten if you wish to shape your diet for thyroid fitness.
You may have read that green, leafy veggies like kale, bok choy, broccoli, and Brussels sprouts can make hypothyroidism worse. But before you keep reading, ask yourself a question: Do you live in the United States? That’s key — because if you do, you likely don’t need to worry about these cancer-fighting veggies messing with your hypothyroidism management. (7)
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Please Note: The material on this site is provided for informational purposes only and is not medical advice. Always consult your physician before beginning any diet or exercise program.
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