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Contraceptive Pill Chemicals Are Turning Fish Transgender, Says Study

Chemicals from contraceptive pills being flushed down household drains is causing male fish to turn transgender, a study claims.

PTI

Updated:July 4, 2017, 3:53 PM IST
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Contraceptive Pill Chemicals Are Turning Fish Transgender, Says Study
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London: Chemicals from contraceptive pills being flushed down household drains is causing male fish to turn transgender, a study claims.

About a fifth of male river fish are displaying feminised traits and even producing eggs, researchers said. Some have reduced sperm quality and display less aggressive and competitive behaviour, making them unlikely to breed successfully.

The chemicals causing these effects include ingredients in the contraceptive pill, by-products of cleaning agents, plastics and cosmetics.

"We are showing that some of these chemicals can have much wider health effects on fish that we expected," said Charles Tyler, of the University of Exeter in the UK.

"Using specially created transgenic fish that allow us to see responses to these chemicals in the bodies of fish in real
time, for example, we have shown that oestrogen found in some plastics affect the valves in the heart," Tyler was quoted as
saying by 'The Telegraph'.

According to the study, 20 per cent of male freshwater fish at 50 sites had feminine characteristics.

More than 200 chemicals from sewage plants have been identified with oestrogen-like effects and drugs such as antidepressants are also altering fish's natural behaviour, researchers said.

"Other research has shown that many other chemicals that are discharged through sewage treatment works can affect fish,
including antidepressant drugs that reduce the natural shyness of some fish species, including the way they react to predators," Tyler said.
(Get detailed and live results of each and every seat in the Lok Sabha elections and state Assembly elections in Andhra Pradesh, Odisha, Arunachal Pradesh and Sikkim to know which candidate/party is leading or trailing and to know who has won and who has lost and by what margin. Our one-of-its-kind Election Analytics Centre lets you don a psephologist’s hat and turn into an election expert. Know interesting facts and trivia about the elections and see our informative graphics. Elections = News18)
| Edited by: Ashutosh Tripathi
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