There has been so much negative press against plant estrogen as just flat out dangerous. This largely comes from competing industries and faulty science. I just did a quick search on plant estrogen this morning and keep finding the same result. No matter what year or type of study that was done.
“…they have now been shown to influence not only sex hormone metabolism and biological activity but also intracellular enzymes, protein synthesis, growth factor action, malignant cell proliferation, differentiation, and angiogenesis in a way that makes them strong candidates for a role as natural cancer-protective compounds.” – Environmental Health Perspectives