Certain raw foods (cooking inactivates the goitrogens, except in the cases of soy and millet[1]) have been identified as lightly goitrogenic. These foods include:
Despite being generally a stimulant, caffeine (examples: coffee, tea, cola, chocolate) acts on thyroid function as a suppressant.[9] Indeed some studies on rats suggest that excess caffeine in conjunction with a lack of iodine may promote the formation of thyroid cancers.[10]
Foods stimulating thyroid tissue
Some foods and drinks have an opposite effect on the thyroid gland; that is, they stimulate thyroid function rather than suppressing it, examples being avocado and saturated fat.