Abstract
To evaluate the effects of laptop computers connected to local area networks wirelessly (Wi-Fi) on human spermatozoa. Prospective invitro study. Center for reproductive medicine. Semen samples from 29 healthy donors. Motile sperm were selected by swim up. Each sperm suspension was divided into two aliquots. One sperm aliquot (experimental) from each patient was exposed to an internet-connected laptop by Wi-Fi for 4 hours, whereas the second aliquot (unexposed) was used as control, incubated under identical conditions without being exposed to the laptop. Evaluation of sperm motility, viability, and DNA fragmentation. Donor sperm samples, mostly normozoospermic, exposed exvivo during 4 hours to a wireless internet-connected laptop showed a significant decrease in progressive sperm motility and an increase in sperm DNA fragmentation. Levels of dead sperm showed no significant differences between the two groups. To our knowledge, this is the first study to evaluate the direct impact of laptop use on human spermatozoa. Exvivo exposure of human spermatozoa to a wireless internet-connected laptop decreased motility and induced DNA fragmentation by a nonthermal effect. We speculate that keeping a laptop connected wirelessly to the internet on the lap near the testes may result in decreased male fertility. Further invitro and invivo studies are needed to prove this contention.
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