>>2252577Soy contains phytoestrogens.
A phytoestrogen is any chemical in plants that mimic estrogen.
It's debatable if they are truly processed by the human body or if there effects are tiny. For example, Horny Goat Weed is an herb that contains phytoandrogen and often placed into energy drinks on the basis that it will make you feel livelier due to increased T.
Does horny goat weed boost T? I've seen no data suggesting it has an impact.
The real enemy that has more data is xenohormones like DEET and BPA.