Whole grains also help the thyroid gland. For example, lentils, brown rice, barley, millet, popcorn, wild rice, oats, and whole wheat. People should consume marine plants, such as algae if they have thyroid problems. Thyroid problems are often caused by free radicals.
On the other hand, foods rich in antioxidants protect us, i.e. the production of the thyroid hormone which is dependant for many important bodily functions. Those who want a healthy thyroid should eat fresh fruits and vegetables, such as blueberries, tomatoes, cherries, courgettes, and peppers. But broccoli, cauliflower, cabbage, rapeseed, kale, turnips, kohlrabi, and Brussels sprouts may have goitrogenic effect.