Thursday, August 18, 2011

Semen quality drops after age 35 in Chinese men

A new study of age-related changes in semen in Chinese men shows sperm health can start declining as early as age 30, with notable changes after age 35, although the research stops short of determining the effects on fertility. "The motility -- the ability of the sperm to move -- does change with age, and that probably will translate into a likelihood that, as a group, older men are going to have a harder time to fertilize," said Andrew Wyrobek, a sperm specialist at Lawrence Berkeley National Laboratory in California, who was not involved in this research. More>