Concerns rise as sperm counts drop

Some scientists are sounding the alarm bell on male fertility issues and warning that there have been steep drops in sperm counts among Western men in recent decades.

A September 17, 2018 Vox article assessed evidence from several key studies on sperm counts, including a 2017 paper that found that sperm counts have dropped by half in the West since the 1970s. The authors of that study called on health authorities around the world to investigate the causes of the sharp ongoing drop in sperm count.

Jorge Chavarro, associate professor of nutrition and epidemiology at Harvard T.H. Chan School of Public Health, told Vox that the 2017 study, which he was not involved with, was “by far the most convincing evidence that sperm counts are dropping.”

Read the Vox article: Sperm counts are falling. This isn’t the reproductive apocalypse — yet.

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