- COPENHAGEN (AFP) - Men in their 50s have higher sperm quality than that
of younger men, according to two studies published Tuesday that examined
the sperm of 9,600 Danish men.
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- The surveys, published in the daily Information,
also show that sperm quality has decreased by 2 percent over the past two
decades.
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- "It is surprising to note that men
in their 50s secrete such rich sperm, while we had previously thought that
sperm quality decreased with age," Jens Peter Bonde, a doctor of industrial
medicine at Aarhus Kommunehospital, told the newspaper.
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- The studies also revealed that tobacco
and bad working conditions affect sperm quality less than previously thought.
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- In fact, a man's reproductive capacity
is determined at an almost embryonic stage in his development and changes
little during life, Bonde said.
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- The findings were based on two studies.
The first, which studied the effect of the workplace on fertility starting
in 1985, followed 1,000 fertile men born between 1950 and 1970.
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- The second studied 8,600 men who visited
a Danish clinic for fertility problems between 1968 and 1992.
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