These 10 Bad Habits Could Lead to Thyroid Problems

Wheat and other grains like rye, barley, millet and oats. There has been some evidence of the link between gluten-sensitivity and poor thyroid health function. If your thyroid isn’t in great shape, you’ll probably be better off restricting your intake of gluten. Millet contains goitrogens, and should be avoided if you’re concerned about your thyroid.
Cruciferous vegetables like broccoli, cabbage, turnips, brussels sprouts and kale.These veggies are known for their thyroid-suppressing properties because they contain goitrogens. Thorough cooking deactivates these to some extent. You don’t have to eliminate these vegetables from your diet, but it would be wise to reduce your intake if you’re concerned about thyroid health.
Soy in its many forms. Soy is a powerful food. Even a small serving of soy each day is enough to suppress thyroid function. So give your thyroid a break and ditch the soy.
Soy. Yes, I am including this one twice because it’s one of the worst foods for your thyroid. Don’t underestimate how damaging this food is to your metabolism.
Coffee. Caffeine overstimulates the thyroid and interferes with the absorption of nutrients that could benefit thyroid health. It’s best to limit your consumption of caffeine-laden beverages like coffee. ***(UPDATE Dec. 2012: My original ideas about coffee and thyroid health may be incorrect. As it turns out, coffee may be beneficial to thyroid health in addition to providing other important benefits..