An international team led by Professor Hagai Levine of Hebrew University of Jerusalem's Hadassah Braun School of Public Health, with Prof. Shanna Swan at the Icahn School of Medicine, Mount Sinai, New York, along with researchers in Denmark, Brazil, Spain, Israel and the U.S., published the first meta-analysis to demonstrate declining sperm counts among men from South and Central America, Asia and Africa.
counts in North America, Europe, and Australia—reported by this team in 2017—has continued and even accelerated in the 21st century. Sperm count is not only an indicator of human fertility; it also is an indicator of men's health, with low levels being associated with increased risk of chronic disease, testicular cancer and a decreased lifespan. The authors say the decline reflects a
. It includes an additional seven years of data collection and focuses on sperm count trends among men in regions not reviewed previously, specifically South America, Asia and Africa. Time is running out, cautioned Levine."Our findings serve as a canary in a coal mine. We have a serious problem on our hands that, if not mitigated, could threaten mankind's survival.
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