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15 August 2011

Semen quality drops at 35

A study of age-related changes in semen shows sperm health can start declining as early as 30, with notable changes after 35, but doesn't determine the effect on fertility.

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.

Compared to men aged 20 to 29 years old, 35-year-olds had less motile sperm. The subtle drop in sperm motility actually began around age 30 and progressed by about 1% each year after that.

 
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