LAPTOP computers may be damaging male fertility because they overheat men's scrotums, new research suggests.
A study in the journal Fertility and Sterility this week measured the temperature of 29 men's scrotums while they used laptops on their knees, both with and without use of a lap pad underneath. The subjects also sat with their legs apart to see if the temperature changed.
State University of New York researchers found that when the men sat with their legs together and did not use a lap pad, it took 11 minutes for the computer to increase scrotal temperature by 1 degree - enough to damage sperm production. With the lap pad, it took 14 minutes and when the men sat with a lap pad, with legs apart it took 28 minutes.
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Director of Andrology Australia, Professor Rob McLachlan, said men should be careful about how long they use laptops for and in what position, as testicles should be a couple of degrees cooler than normal body temperature, and able to sweat, to produce good sperm.
''[Otherwise] it may take a few months of keeping the testicles at a normal temperature for sperm counts to improve," he said, advising that men wanting children should also avoid taking regular hot baths or spas.
Research shows that for a third of infertile couples, the problem lies with the man.
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