Research was done on a chemical that might’ve turned frogs female - is that what you’re thinking of?

Beginning in the 2010s, various media personalities promoted conspiracy theories claiming that exposure to endocrine disrupting chemical pollutants in the water supply are responsible for an alleged increase in the gay or transgender population. These claims are not supported by scientific evidence and appear to be a conflation with active research claims that endocrine disruptors induce a feminizing effect on certain non-human animals.