NEW YORK (Reuters Health) - Obese men are more than three times as likely to have low sperm counts compared with their normal-weight peers, a study out this month in the journal Fertility and Sterility shows.
The heaviest men were also at triple the risk of having a low count of progressively motile sperm -- sperm that swim forward in a straight line, Dr. Ahmad O. Hammoud of the University of Utah in Salt Lake City and colleagues found.
"There is a strong relationship between overweight and obesity and altered sperm parameters," Hammoud and his team write. Future studies should look at this relationship over time, they say, as well as how weight loss might affect sperm characteristics.
SOURCE: Fertility and Sterility, December 2008.
Full article: http://in.reuters.com/article/health/idINTRE4BT47X20081230
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