This article originally appeared in Mysterious Universe Magazine and is used with permission.
Sperm Crisis Going On
Does Nature think the Earth is overpopulated? Because a "natural" form of birth control is going on right now: A new study of 26,000 men shows that between 1989 and 2005, average sperm counts fell by a third, increasing their risk of infertility.
The decline occurred progressively throughout the 17-year period, meaning that it could still be going on. In fact, in 2011, the US birth rate was the lowest ever recorded, led by a large decrease in births to immigrant women.
Other research over the last 20 years has shown that sperm counts are declining in many countries. The reason isn’t known, but possible explanations have ranged from tight underwear to estrogenic toxins in the environment.
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