A two-decade drop in sperm counts.Several researchers have observed signs of a decline in sperm counts sperm count Urology A measure of the concentration of sperm in semen Normal ±100 million/mL. See Post-vasectomy sperm count, Semen analysis. throughout the industrial world recently -- signaling, they suggest, a possible threat to men's fertility (SN: 1/22/94, p.56). In the Feb. 2 New England Journal of Medicine The New England Journal of Medicine (New Engl J Med or NEJM) is an English-language peer-reviewed medical journal published by the Massachusetts Medical Society. It is one of the most popular and widely-read peer-reviewed general medical journals in the world. , Jacques Auger auger (ô`gər): see drill. auger Tool (or bit) used with a carpenter's brace for drilling holes, usually in wood. It looks like a corkscrew and produces extremely clean holes, almost regardless of how large the bit is. of Universite Paris Sud in France and his colleagues report a steady, 20-year drop in the concentration, motility motility /mo·til·i·ty/ (mo-til´ite) the ability to move spontaneously.mo´tile Motility Motility is spontaneous movement. , and percent of normal-shaped sperm among the 1,351 fertile men they studied. This unexplained drop occurred "independent of the age of the men," they add. |
|
||||||||||||||||||
Printer friendly
Cite/link
Email
Feedback
Reader Opinion