波多野结衣办公室双飞_制服 丝袜 综合 日韩 欧美_网站永久看片免费_欧美一级片在线免费观看_免费视频91蜜桃_精产国品一区二区三区_97超碰免费在线观看_欧美做受喷浆在线观看_国产熟妇搡bbbb搡bbbb_麻豆精品国产传媒

Men warned: Hot laptops could cook fertility
(Agencies)
Updated: 2004-12-09 12:21

Teenagers and young men should keep their laptops off their laps because they could damage fertility, an expert said Thursday.

Laptops, which reach high internal operating temperatures, can heat up the scrotum which could affect the quality and quantity of men's sperm.

Teenagers and young men should keep their laptop computers off their laps because they could damage fertility, an expert says. File photo shows a life-like sculpture of a man using a mock laptop at a trade fair. [Reuters]

"The increase in scrotal temperature is significant enough to cause changes in sperm parameters," said Dr Yefim Sheynkin, an associate professor of urology at the State University of New York at Stony Brook.

"It is very difficult to predict how long the computer can be used safely," he told Reuters. "It may not be at all, if the testicular temperature goes up high within a very short period of time."

Adolescents and young men who use laptops several times a day over many years face the greatest risk. Sheynkin fears that if laptop use is not curtailed, in 15-20 years when they want to start a family the men could face problems.

"Long-term use may have a detrimental effect on their reproductive health," he said.

Sheynkin and his team studied the impact of using a laptop on 29 healthy volunteers between the age of 21-35 by measuring scrotal temperature before and after they used a computer on their lap.

The research is reported in the journal Human Reproduction.

Even without turning the laptop on, the scrotal temperature rose by 2.1 degrees Centigrade when the young men sat with their thighs together to balance the computer on their lap.

When they switched it on the temperature rose -- by 2.8 degrees C on the right side and 2.6 degrees C on the left.

"It shows that scrotal hyperthermia is produced by both special body posture and the local heating effect of laptop computers," Sheynkin said.

A serious case of laptop burn was reported in a letter published in a medical journal two years ago after a 50-year-old man burned his penis while using a laptop balanced on his legs for an hour, despite wearing trousers and underpants.

The researchers used two different brands of computers in the study.

"All laptop computers generate significant heat due to the increasing power requirements of computer chips. New laptops with higher power requirements may produce even more heat," Sheynkin added.

Close

Twins' new album to release tomorrow China bans Nike TV ad as national insult 'Memoirs of a Geisha' posters released

Today's Top News     Top Life News
EU works on lifting of arms embargo on China         Policy makers weigh milder 2005 targets         'Gold collar' class expands in China         US GIs hit Rumsfeld with hard questions         Plan in pipeline for population problems         Nike apologises for footwear ad in China	False 'Bank of China' web site sealed       'Gold collar' professionals increasing: survey       Free pre-marriage health tests offered       First and youngest SARS volunteer tests negative       Men warned: Hot laptops could cook fertility       Limit on private cars questioned