Decline in sperm count and motility in young adult men from 2003 to 2013: observations from a U.S. sperm bank

What is it about?

This paper is a retrospective review of all sperm donor applicants in the Boston area over a 10 year period of time. We demonstrated a significant decline in sperm count and motility, as well as a decline in sperm motility after freezing and thawing. There was no change in the age or other demographic characteristics of the study population. Thus this decline was considered a true decline in sperm parameters.

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