“A 2002 study by Tyrone Hayes, of the University of California, Berkeley, found that exposure caused male tadpoles to turn into hermaphrodites”

- https://en.m.wikipedia.org/wiki/Atrazine

A later study, funded by Syngenta itself, essentially said “nothing to see here, move along”.

Endocrine disruptors are a real thing[0]. They come from many kinds of pollution. Probably not intentional but they are there.

Endocrine disruptors can cause changes in sexual behaviours and expression of primary and secondary sexual characteristics in animals (including humans).

Not exactly the same thing but this is the grain of truth in what seems like an entirely absurd idea.

[0]https://pubmed.ncbi.nlm.nih.gov/10680769/