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Old December 5 2012, 02:52 PM   #2
Robert Maxwell
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Re: Falling sperm crisis?

I wonder if they are comparing men of the same age, or looking at general population fertility, which would understandably be declining in a population whose age pyramid is shifting upward.

This is definitely a big deal but I am at a loss to explain it. Seems like nobody knows why this is happening. I've heard the tight underwear hypothesis before, and it's conceivable that that's a contributor, but I would find it hard to believe that'd cause an almost 1/3 decline in fertility over a mere 16 years.
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