> "Phytoestrogens, through their ability to bind to all human steroid hormone receptors, exert effects on the miriad of human biological systems that rely on hormones for homeostasis, both directly through SERM-like activity, and indirectly through HPTA modulation of hypothalamic hormone receptors."

If one were to ask "do phytoestrogens impact male: sexuality, sperm count, mood, etc." the answer is always going to by "yes," but it's a misleading yes. We don't get any specificity as to how much of an impact (certain) phytoestrogens have (that is a matter for you to make your mind up on by reading through hundreds of experimental papers and deciding which ones are worth anything ;).

Whatever other questions that stem from this start getting into the realm of public policy and personal impact, "are phytoestrogens bad? Should they be regulated? Am I going to avoid phytoestrogens?" Frankly I have no interest in getting involved in such a subjective matter.