Shanna Swan, Ph.D., a reproductive epidemiologist with the Icahn School of Medicine, Mount Sinai, New York, has been studying declining sperm counts for decades. In 2017, she and colleagues published a study that went viral because it predicted an impending fertility crisis. Men experienced a 50% to 60% decline in sperm counts from 1973 to 2011, the 2017 study found, amounting to a decline of over 1% per year over the last 50 years.1,2 The team then expanded the study, adding seven years of data and an expanded geographical range. The new study, published in Human Reproduction Update in November …read more
Source: Sott health news feed
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