Quote:
atrazine
Popular weed killer demasculinizes frogs, disrupts their sexual development, UC Berkeley study shows
In their journal article, Hayes and his colleagues write, "The effective doses in the current study ... demonstrate the sensitivity of amphibians relative to other taxa, validate the use of amphibians as sensitive environmental monitors/sentinels, and raise real concern for amphibians in the wild."
Hayes doubts that atrazine has such severe effects on humans, because the herbicide does not accumulate in tissue and humans don't spend their lives in water like frogs do. Nevertheless, the effects of atrazine on frogs could be a sign that the herbicide is subtly affecting human sex hormones too, interfering with androgens, such as testosterone, that control male sex characteristics.
There are a lot of similar items creating 'cause for concern' about this subject. :(