Hormonal disorders in fish from contraceptives to urban wastewater

Researchers at the University of Cincinnati report in the journal Aquatic Toxicology that the contraceptive estrogen reduces the fertility and percentage of fish in the United States. Heterandria formosa. New research adds to previous studies that warned that hormones in sewage cause sex reversal in amphibians and other frogs, turning males into females. In the new study, Dr. Latonia Jackson used in contraceptives, as well as in hormone replacement therapy in postmenopausal women. Laboratory experiments have shown that female fish have fewer offspring, and proportionally fewer male offspring, when exposed to relatively The worrying finding is that the concentration of this hormone in rivers where water is discharged from biological treatment plants was as high as 60 nanograms per liter. The problem is due to contraceptive pills that are discarded directly. in the toilet (something that should be avoided) but also from the hormones excreted in the urine. As is the case with many other drugs, such as antidepressants, the hormones are not broken down and filtered during biological treatment and end up unchanged in aquatic ecosystems. But in addition to fish and other organisms, hormones in sewage are also a potential hazard to human health, as they often end up in drinking water supplies. “Anything you throw in the toilet or sink will end up in the water supply,” warns Dr. Jackson. “Drinking water is not a renewable source,” he said. “It is important to keep this natural resource clean.” Follow it on Google News and be the first to know all the news See all the latest News from Greece and the World, at

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