I am refering specifically to DES, a hormone fed to cattle that allows maturation in 2 years rather than three, with a fantastic rate of weight-gain. This stuff has the unfortunate properties of collecting in the animals flesh, and of not being dispersed by cooking. It is banned now in the US, of course, but poorly regulated and often found in both foreign and domestic samples of our beef supply. It is a lucrative black-market drug due to the fantastic profit potential to ranchers.
I have read nothing of soy causing these symptoms in infants, although I am very much pro-breastfeeding, and frown on soy formulas. What is your source? Is this common? I am a nurse (and an anthropologist) and have not seen this personally. Also, few infants were fed a soy-based formula until recently, but early maturation has been a problem for decades, seen throughout the entire spectrum of the population.