foods that cause hypothyroidism
1 Foods with thiocyanates can make it difficult for the thyroid to absorb iodine. 2  Broccoli, brussels sprouts and cabbage contain thiocyanates. 3  Soy is linked with thyroid conditions, including hypothyroidism. 4  Gluten is one goitrogen and can trigger autoimmune responses.hese compounds make it difficult for the thyroid gland to absorb iodine and their effect can only be minimized when diet is supplemented with iodine. Some of the noteworthy vegetables with thiocyanates are flax, sweet potato, broccoli, brussels sprouts, cabbage, canola, cauliflower, mustard greens, radishes and kale.