I used to eat a lot of soy, but got both breast cancer and Hashimoto's, so I have cut most of it out. My endocrinologist said it's okay in small amounts, and my oncologist said it's controversial, but a little would probably be fine. I still eat Miso soup maybe once a week, and soy sauce on occasion. I would say avoid the most processed forms if you're worried, like fake hot dogs.
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