I dont have citations on hand, but my understanding is that this claim is largely attributed to a single/small amount of studies of dubious validity funded by US Beef industry, and that when you look at populations that have much higher soy intake, their estrogen levels are not elevated/are lower than similar US populations.
Grain of salt and all that, just offering a lead for those curious of the counter argument
Grain of salt and all that, just offering a lead for those curious of the counter argument