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Why are sperm counts falling? Contraceptives in drinking water and chemicals in some plastics may be to blame, scientists claim
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Why are sperm counts falling? Contraceptives in drinking water and chemicals in some plastics may be to blame, scientists claim
Sex hormone oestradiol – the birth control hormone that passes untreated through sewage plants – has larger effect on sperm than Bisphenol A
BPA belongs to a class of compounds called endocrine disruptors
Found in some plastics used to make food containers, bottles and receipts
Study found BPA disrupts delicate DNA interactions needed to make sperm
Sperm counts have fallen dramatically in the past 50 years, studies show
By ANNA HODGEKISS FOR MAILONLINE
Source: www.dailymail.co.uk
Falling sperm counts could be caused by traces of the contraceptive pill in drinking water, a new study has claimed.
U.S. scientists say the sex hormone oestradiol – the birth control hormone that passes untreated through sewage plants – has an even larger effect on sperm than Bisphenol A or BPA, as it is widely known.
BPA is found in some plastics used to make food containers, bottles and coatings in tin cans, and is also commonly used in thermal paper in cash register receipts.
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Decline: Falling sperm counts could be caused by traces of the contraceptive pill in drinking water, scientists in Washington have claimed
Decline: Falling sperm counts could be caused by traces of the contraceptive pill in drinking water, scientists in Washington have claimed
But researchers claim BPA can disrupt hormones, raising the risk of a wide number of health problems such as diabetes, obesity and cancer.
The chemical has already been banned in baby bottles in Europe because of safety fears.
But the transparent resin is still used to line most plastic and tin food packaging – despite the calls for an all-out ban by campaigners.
The UK Food Standards Agency says strict regulations mean that the health risk from food packaging is minimal.
The U.S. Food and Drug Administration banned BPA from baby bottles in 2012, but said there was not enough evidence for a wider ban and has found the chemical safe at low levels.
However in the new study, Washington State University geneticists found a direct link between BPA and disrupted sperm production.
Writing in the journal PLOS Genetics, they say the chemical disrupts the delicate DNA interactions needed to create sperm.
In addition to the BPA effects, principle investigator Dr Pat Hunt saw an even larger effect on sperm by oestradiol, the birth control hormone that passes untreated through sewage plants.
She believes she and her team may have unearthed the reason why numerous studies have revealed sperm counts are falling.
The issue has been a subject of concern and since the early 1990s, when Danish researchers reported ‘a genuine decline in semen quality over the past 50 years,’ with possible implications for male fertility….More Here
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