Soy isn't the only plant loaded with phytoestrogens lol they also used least as an artificial sweetener.

Humans are meant to eat fish, grazing animals and fruit when it's in season. Everything else, save for a handful of plants, requires pre-processing to be digestible and long term chronically safe to eat.

Like cassava, it's a staple food, it's also full of cyanide. Beans: full of lectins and endocrine dusrupters. Corn, needs to be nixtamalised or else it's not actually food. Etc...

The only reason we eat plants in the level we do is because we overhunted all the massive grazing animals that we evolved on eating. We were too successful.

Soy isn't the only plant loaded with phytoestrogens lol they also used least as an artificial sweetener.