We're often told that environmental pollution affects male fertility, but new research strengthens that link as scientists have found testosterone-blocking chemicals in rivers in the UK.
The researchers have found a new group of chemicals in our rivers that inhibit the function of testosterone, and combined with the oestrogen type chemicals we already know are in our water, these have had the effet of "feminising" male fish. This has led to reproductive problems and some male fish have even changed sex. The oestrogens arrive in the water via the sewage system from the contraceptive pill or industrial chemicals, whilst it is not entirely clear where the new group of chemicals originate.
It is thought that there may be a link between what is happening to the fish and the increase in male fertility problems in humans.
You can read more about the research at www.brunel.ac.uk/news
No comments:
Post a Comment