if soy is fermented, it can significantly reduce the phytate content of soybeans.
Soybeans are high in phytic acid, present in bran or in the hull of seeds. It can block the uptake of essential minerals, like calcium, magnesium, copper, iron and zinc, in the intestines. We have often seen vegetarian patients express a "spacey feeling" which can be mistaken by them as the high of spiritual enlightenment via eating in this manner. Zinc is required for a functioning brain and nervous system. If deficient, the eater must find ways to supplement in a healthy way, minerals. This is where vegans and vegetarians who consume tofu and bean curd as a substitute for meat and dairy, risk severe mineral deficiency. Also these same eaters indulge in soy protein isolate.
Soy Protein Isolate
This is what we call "fake meat and fake dairy" products. However you often see imitation soy used in soy milk and baby formulas. The plant estrogens in soy can interfere with proper development of infants thyroid, brain and reproductive systems. They did a test in Italy on infants and toddlers. 53% under three months who reacted poorly to dairy formulas also reacted poorly to soy formulas.
Here is the Bad News about SPI
Soy Protein Isolate is produced in industrial factories where soybeans are first mixed with an alkaline solution to remove fiber, then precipitated and separated using an acid wash and finally neutralized in an alkaline solution. Acid washing is done in aluminum tanks and leaches high levels of aluminum into the final product. The resulting curds are spray-dried at high temperatures to produce a high protein powder. Nitrites ( which are potent carcinogens) are formed during the spray drying and another toxin called lysin oalanine. A final indignity to the orginal soybean is high temperature, high pressure extrusion processing of soy protein isolate to produce TVP: Textured Vegetable Protein.
This high temp process has an unfortunate side effect of denaturing the other proteins in the soy so they are rendered largely ineffective. That is why animals on soy feed need lysine supplements for normal growth. If SPI is used in feeding the animals, extra Vitamin E, K, D and B12 are necessary to offset the deficiencies it creates. Phytic acid greatly inhibits zinc and iron absorption. If SPI is fed to the animals, they develop enlarged organs, particularly pancreas and thyroid and increased fatty acid deposits in the liver. In addition, artificial flavorings, sometimes, MSG are added to SPI and TVP to mask their strong "beany" taste and to impart the flavor of meat.
SPI and TVP are used in school lunch programs, commercially baked goods, beverages and fat free products. Third world countries receive food give-aways with SPI and TVP.
Soy lurks everywhere. It is even in Bumblebee canned tuna, Baskin Robbins 31 flavors ice cream, Hersheys chocolate, donuts, moist breads, luncheon meats, burgers and pizza. There are soy inks, soy candles, paints, plastics, carpets, mattresses, vitamins over the counter. Even in the bin aisles of your health food store.
Symptoms of soy allergy (within an hour of ingestion):
Coughing, sneezing, runny nose, hives, diarrhea, facial swelling, shortness of breath, swollen tongue, difficulty swallowing, low blood pressure, fainting.
You can still enjoy the taste of soy sauce, by purchasing organic, wheat free gluten free low sodium tamari sauce. Be aware of labels, take the time to read ingredients. It's your body!
excerpt "The whole soy story: the Dark side of America's health food (2004) by Kaayla T. Daniel, PhD,
Also, Nexus Magazine on Soy Dangers