The marijuana plant produces estrogenic compounds, and some plants produce compounds equivalent to testosterone or estrogen.

“the marijuana plant has these estrogenic properties. And I asked a plant biologist whether or not this was unusual. And I asked because there's all this stuff out there about, "Oh, you know, Soy does this. And these plants are highly estrogenic, et cetera." Although we should probably point out that a lot of factory meats are also estrogenic. So this isn't a meat versus plants thing. But this plant biologist told me, "Oh yeah, there are plants that make what is essentially the equivalent of testosterone like pine pollen as it looks a lot like testosterone. And there are other plants that make what is essentially estrogen."”