Epidemiologist Shanna Swan says low counts and changes to sexual development could endanger human species
Falling sperm counts and changes to sexual development are “threatening human survival” and leading to a fertility crisis, a leading epidemiologist has warned.
Writing in a new book, Shanna Swan, an environmental and reproductive epidemiologist at Icahn School of Medicine at Mount Sinai in New York, warns that the impending fertility crisis poses a global threat comparable to that of the climate crisis.
Related: US racial inequities in vaccination raise risk of new Covid hotspots and variants
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