Many readers and clients ask me about soy. Is it healthy? Is it a safe protein option? In my opinion, we need to be careful about soy.
Most soy products, like soymilk and tofu, are GMO, which can depress thyroid function, mess with hormones, and slow down digestion. There is mixed evidence on this so I stick to a low-soy diet, personally.
However, fermented soy products contain beneficial bacteria for the gut, and the fermentation process destroys the anti-nutrients (phylates) that bind to essential nutrients needed by the body.
On The Healthy Life plan, you’re encouraged to enjoy miso, natto, tempeh and tamari (wheat and gluten-free soy sauce). If you have an underactive thyroid, cut out ALL soy products, even fermented ones.