Quality of sperm declines as men age

June 6, 2006
A sperm attempts to penetrate the ovum coat to fertilize it. Image from Wikipedia

(AP) -- It isn't only women who face a ticking biological clock when planning parenthood. New research has found that as men age, the quality of their sperm deteriorates, making it more likely they will have trouble becoming fathers and increasing the possibility of having a child with dwarfism.

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