Would you be willing to share some links to studies about the negative health effects? I couldn’t find any but I am interested as I use unfermented soy products every day. From my understanding it’s mostly been debunked. Also they do eat a lot of unfermented soy products like tofu in Asia.
Clinical studies show no effects of soy protein or isoflavones on reproductive hormones in men: results of a meta-analysis https://www.fertstert.org/article/S0015-02820900966-2/fulltext
The environmental effects of soy are largely caused by the fact that we feed it to cows instead of eating it ourselves. If we ate the soy bean ourselves
Quote from Guardian https://www.theguardian.com/environment/2009/jun/21/ethical-living-soya
“The first thing I should do is to explain that although Europe imports 39m tonnes of soya a year (imagine it contained in 15 miles’ worth of lorries bumper to bumper), 90% is destined for animal feed. It’s beef rather than veggie burgers that ate all the soybean. Secondly, at least tofu (soybean curd) allows you to source dietary protein directly from a vegetarian food. By contrast it takes 8-16lb of soybeans to produce 1lb of beef, which is spectacularly inefficient. Hardly a snappy riposte, but it should do the job.”