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Laptop Computers May Affect Male Fertility
Original page:http://my.webmd.com/content/Article/98/104676.htm
Best Not to Balance Them on the Lap, Study Shows
By Miranda HittiWebMD Medical News
Reviewed By Brunilda Nazario, MDon Wednesday, December 08, 2004
Dec. 8, 2004 -- Male fertility may be affected by perching laptop computers on the lap, according to a new study.
Balancing laptop computers on the lap raises the scrotum's temperature, say researchers including Yefim Sheynkin, MD, FACS, of the urology department at the State University of New York at Stony Brook...
Scrotal temperature rose with the working and nonworking computers. However, the working laptops prompted a greater increase in scrotal temperature -- around a 5 degrees Fahrenheit increase (or about 2.7 degrees Celsius)...
"Working on laptop computers in a laptop position causes significant scrotal temperature elevation as a result of heat exposure and posture-related effects," say the researchers.
Is the increase enough to impair male fertility? The researchers can't say for sure. However, they note that another study showed that sperm concentration dropped by 40% when median daytime scrotal temperature rose by 1 to 2 degrees Fahrenheit (or 1 degree Celsius).
More than 60 million laptop computers are expected to be in use by 2005, with another 90 million worldwide, the researchers say. Calling for more studies, they suggest that teenage boys and young men may want to limit their use of laptop computers on their laps.
SOURCES: Sheynkin, Y. Human Reproduction. News release, MW Communications.
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