All soybean products are hazardous

Fermentation releases even more of the hormone disruptors, making it even worse.

Go to that "Soy Alert!" page. There are thousands of studies showing negative effects on both animals and humans.

Why Fermented Soy Is Even More Goitrogenic Than Plain Soy


Health Effects of Soy Protein and Isoflavones in Humans
Impacts of soy products on thyroid and reproductive functions as well as on certain types of carcinogenesis require further study in this context. Overall, existing data are inconsistent or inadequate in supporting most of the suggested health benefits of consuming soy protein or ISF.
~The more research they do, the more negative soy looks. The soy alert link shows many, many studies.

Soy Isoflavones Exert Modest Hormonal Effects in Premenopausal Women
The high isoflavone diet decreased free T3 (P = 0.02) and dehydroepiandrosterone sulfate (P = 0.02) levels during the early follicular phase and estrone levels during the midfollicular phase (P = 0.02).
~It reduced T3 thyroid hormone. That is essential to thyroid function. It was destroying thyroid function.

170 Scientific Studies Confirm The Dangers of Soy


Milk- and soy-protein ingestion: acute effect on serum uric acid concentration.
Serum uric acid decreased significantly 3 h after ingestion of lactalbumin and casein but increased after soybean consumption.
~Want gout? This is how you get gout.