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| US fertility experts are warning teenage boys and young men to consider limiting the time that they use notebook computers positioned on their laps, as long-term use may affect their fertility. The increasing popularity of notebook computers (NC), coupled with existing evidence that elevated scrotal temperature can result in sperm damage, prompted researchers from the State University of New York at Stony Brook to undertake the first study into the effect of heat from NC on scrotal temperature. The findings are reported in Europe's leading reproductive medicine journal Human Reproduction. They show that using an NC on the lap increased the left scrotal temperature by a median 2.6?C and the right by a median 2.8?C. Several previous studies have shown that increases in testicular or scrotal temperatures of between 1?C and 2.9?C are associated with a sustained and considerable negative effect on spermatogenesis and fertility. |
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