Men who regularly lift heavy objects at work have higher sperm counts

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Men who regularly lift heavy objects at work have higher sperm counts, according to a new study from researchers at Brigham and Women’s Hospital.

Boston scientists found that occupational factors, such as physical demands and work schedules, were linked to higher sperm and serum testosterone concentrations among men in the Environment and Reproductive Health (EARTH) clinical trial.

“We already know that exercise is associated with several health benefits in humans, including those seen in reproductive health, but few studies have looked at how occupational factors may contribute to these benefits,” said first author Lidia Mínguez-Alarcón, reproductive epidemiologist at Brigham’s Channing Division of Network Medicine and co-investigator of the EARTH study.

“What these new findings suggest is that physical activity during work may also be associated with a significant improvement in men’s reproductive potential,” added Mínguez-Alarcón.

Infertility is a growing problem and can be caused by a wide variety of factors. However, around 40% of infertility cases can be attributed to male factors such as sperm count, semen quality and sexual function.

In particular, sperm count and semen quality are believed to be key drivers of rising infertility rates among men – a previous analysis led by the EARTH study team found that among men seeking fertility treatment , sperm count and quality decreased by up to 42%. between 2000 and 2017.

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