Reviewing 19 studies in total, the United States Environmental Protection Agency concluded in 2013 that atrazine has no consistent effects on development in amphibians.
What’s causing sex reversal in these wild frog populations is not yet clear, but our latest data suggest that natural temperature variation, occurring independently of urbanization or climate change, may be a catalyst.In 2015, American conspiracy theorist and radio personality Alex Jones claimed that atrazine had caused a majority of frogs in the US to become homosexual, and that the US government was waging a "chemical warfare operation" to increase rates of homosexuality and decrease birth rates.
[1] The idea of a link between atrazine and sexual development was later revived by American environmental lawyer and anti-vaccine activist Robert F. Kennedy Jr., during his 2024 presidential campaign.
[5][17] Scientific consensus, as summarized in a 2016 review in Psychological Science in the Public Interest, is that there is "no persuasive evidence that the rate of same-sex attraction has varied much across time or place".
[18] In contrast to claims about chemicals in the water, the effects of hormones on sexual orientation appear to occur at the prenatal stage, during organization of the brain.