LONDON (Reuters) - British fish are changing sex due to sewage in rivers
that contains large amounts of female hormones, the Environment Agency says.



In a report on the latest stage of 20 years of research on Friday, it said
that in a survey of 1,500 fish at 50 locations, one-third of the males
showed female characteristics.


The agency which monitors environmental pollution said the sex changes were
a result of the fish being exposed to treated sewage which still contained
hormones produced naturally by women or as a result of them taking the
contraceptive pill.