Sorry, I beg to differ re soy. I am hypothyroid, on meds for it, and tried
an experiment. My daughter had made some food out of soy.
I ate extra helpings to see what would happen. The next morning I was freezing and could not get warm for over 24 hours! Mercola.com has a lot to say about how soy is no way a health food, as do many other sites and Youtube.
If the soy has been cooked or fermented then it loses its goitergenic properties. The same applies to other goitergens: flax seed, cabbage, broccoli, Brussels’s sprouts, peanuts, turnips , peaches, millet, cassava, strawberries, cauliflower, kale, mustard greens, kohlrabi, rutabaga, spinach, and pine nuts to name a few. If you want to avoid goitergens you will pretty much need to stop eating.