Men who wear hard hats may have considerably healthier sperm than their white-collar bosses, a new Harvard study suggests.
Workers who regularly lift or move heavy objects were found to have nearly 50 per cent higher sperm counts than desk-bound workers.
They also had higher levels of testosterone, the male sex hormone that regulates sex drive (or libido) as well as muscle mass and sperm production.
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Sperm quantity, motility and testosterone levels are key factors in male fertility – and sperm counts worldwide are believed to have nearly halved over the past five decades, with scientists suspecting a cocktail of environmental, dietary and lifestyle factors is to blame.
Read more: Euronews
