The Extinction Protocol
Wed, 05 Dec 2012 08:09 UTC
This constitutes a serious public health warning." But Dr Allan Pacey, senior lecturer in andrology at the University of Sheffield, said: "The change in sperm concentration described, 73.6 to 49.9 million per milliliter [on average for a 35-year-old], is still well within the normal range and above the lower threshold of concern used by doctors which is suggestive of male infertility, 15 million per milliliter." There has much been much debate in the past 20 years over whether sperm quality has decreased, with research supporting both sides of the controversy. This latest research adds weight to the numerous European studies that suggest one in five young men has a sperm count low enough to impair fertility.
Prof Richard Sharpe, from the University of Edinburgh, said: "Something in our modern lifestyle, diet or environment like chemical exposure, is causing this. "We still do not know what the most important factors are, but perhaps the most likely is a combination, a double whammy of changes, such as a high-fat diet combined with increased environmental chemical exposures." - BBC
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