Goitrogens

There is a class of vegetables that if eaten raw in large quantities (cooking kills the harmful substance) can inhibit thyroid gland functions. A Goitrogen is a substance that prevents the thyroid gland from working correctly by blocking the uptake of idodine. What is a lot? More than 4 cups a week of the following foods in RAW form will interfere with thyroid function. (for juicers that isn't hard to do).

• Brussel Sprouts
• Cabbage (all kinds)
• Cauliflower
• Kale
• Kohlrabi
• Peaches
• Pears
• Rapnini
• Spinach
• Strawberries
• Radishes (I'm going to read up on this more because I've found several sources that say these are good for regulating the thyroid - and they don't seem to be bothering me)
• Rutabegas
• Turnips

Other foods that can interfere with thyroid function are soybeans, pine nuts, peanuts, millet, rapeseed, and canola oil.

Source:

Natural Health Techniques