Foods that Interfere with Thyroid Function

By  ,  Onlymyhealth editorial team
Oct 19, 2012

The thyroid gland is a butterfly shaped gland located in your lower neck and is responsible for the body’s metabolism. The thyroid releases two specific hormones, namely triiodothyronine (T3) and thyroxine (T4). When these hormones are not released in adequate level, the state  is referred to as hypothyroidism and when the opposite happens then it is known as hyperthyroidism. To allow the proper functioning of the gland you must avoid certain types of foods, as they may interfere with the proper functioning of the gland. The foods that do not allow proper functioning of the thyroid gland are commonly called goitrogen.


[Read: Best Foods for Hypothyroidism]


Non-Fermented Soy


Soy contains a large amount of isoflavones, which interferes with the proper functioning of thyroid gland. Hence Soy items like soybean oil, soy milk, soy burgers and other such products must be avoided. Soy is essentially a phytoestrogen, which is a plant version of estrogen. It is a bio-identical estrogen which our bodies recognise  as it does our own estrogen. Hence you are unknowingly adding estrogen to your body by eating soy products. Hormones are very potent even in the smallest amounts  And this addition offsets the hormone level. So, it is best to avoid soy products.


[Read: Precaustions for Hyperthyroidism]


Few Cruciferous Vegetables


There are certain vegetables that are known as cruciferous and they disrupt the thyroid hormone production. These foods include broccoli, cauliflower, Brussels sprouts, cabbage, mustard, turnips, rutabagas, and kohlrabi. The substance that is present in all of these is known as isothiocyanates, and it is known to decrease the functionality of thyroid gland. It does so by blocking thyroid peroxidase and also by disrupting messages that are sent across the thyroid cells.




Gluten is a potential goitrogen and can trigger auto-immune responses which include Hashimoto’s thyroiditis in people who are biologically very sensitive to gluten. You must avoid wheat, rye and barley, and most processed foods as gluten is found in them.

It is suggested that you visit a doctor in case you experience discomfort in neck movement; thyroid imbalances can have very bad effects on you.


Read more articles on Understand Hyperthyroidism



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