It has been the subject of much discussion for years, but now there is confirmation that male sperm counts are declining sharply. In one of the largest studies conducted, a French team analysed the sperm of more than 25,000 men and found that sperm counts went down by a third between 1989 and 2005.
It may be clear that male fertility is declining, but the researchers don’t know is why this is happening. Various theories have been mooted from wearing tight underwear to environmental factors and high-fat diets, but scientists believe it is imperative to establish what lies at the root of the problem in order to prevent a future fertility crisis. .