Soy is hard on the thyroid gland. It has one nutrient that is the hormonal messenger to tell the gland to take a rest and stop working. MANY people suffering from candida also suffer from low thyroid function. And if your thyroid runs at a low level you badly want it to stay away from any rest. If your thyroid is okay soy products are okay on the diet, if not, after eating them you will start feeling real cold .... which is the dominant symptom for low thyroid. Then stay away from soy products. and take extra Iodine (lugol iodine).