Discussion in 'Habari na Hoja mchanganyiko' started by Mzee Mwanakijiji, Oct 16, 2007.
'More sex needed' to boost sperm
SOURCE: BBC News
Laptops may damage male fertility
Using it on your lap could be risky
Men who use laptop computers could be unwittingly damaging their fertility, experts believe.
Balancing it on the lap increases the temperature of the scrotum which is known to have a negative effect on sperm production, researchers found.
Coupled with the rising popularity of these computers - about 150m people use them worldwide - much more research is needed say the US authors.
The State University of New York findings appear in Human Reproduction.
Teenage boys and young men may consider limiting their use of laptop computers on their laps.
Lead researcher Dr Yefim Sheynkin
Lead researcher Dr Yefim Sheynkin, from the State University of New York at Stony Brook, said: "Laptops can reach internal operating temperatures of over 70・.
"They are frequently positioned close to the scrotum, and as well as being capable of producing direct local heat, they require the user to sit with his thighs close together to balance the machine, which traps the scrotum between the thighs."
The researchers asked 29 healthy male volunteers aged between 21 and 35 to take part in an experiment.
They then recorded the temperature changes to the scrotum caused by laptop use and different seating positions over one hour time periods.
Just sitting with the thighs together, a posture needed to balance a laptop, caused scrotal temperatures to rise by 2.1C.
When the men used a laptop in this position the average temperatures increased by 2.6C on the left of the scrotum and 2.8C on the right.
It is worrying that having a laptop on your knees for only an hour can increase the temperature of the scrotum so significantly.
Dr Allan Pacey of the British Fertility Society
Dr Sheynkin said: "The body needs to maintain a proper testicular temperature for normal sperm production and development (spermatogenesis).
"We don't know the exact frequency and time of heat exposure capable of producing reversible or irreversible changes in spermatogenesis.
"But previous studies suggest that 1・ above the baseline is the possible minimal thermal gradient."
He said any changes might be reversible, but that repetitive use of a laptop in this way might cause permanent damage.
"Until further studies provide more information on this type of thermal exposure, teenage boys and young men may consider limiting their use of laptop computers on their laps," he said.
Speaking on behalf of the British Fertility Society, Dr Allan Pacey, senior lecturer in Andrology at the University of Sheffield, said: "We already know that increasing the temperature of the testicles can affect sperm production.
"It is worrying that having a laptop on your knees for only an hour can increase the temperature of the scrotum so significantly.
"Men who use laptops regularly should be very careful.
"Further work is needed to see if regular laptop use is a risk factor in male fertility."[/QUOTE]
na hii nayo vipi?
sasa hii mbona nikutuweka wengine kwenye utata.. ?
na hii nayo vipi?[/QUOTE]
lol. hii niliiona longitaimu. niliposoma hii, tangu siku hiyo naweka kimto chini ya laptop...aithee kisasi muhimu babaangu.
lol. hii niliiona longitaimu. niliposoma hii, tangu siku hiyo naweka kimto chini ya laptop...aithee kisasi muhimu babaangu.[/QUOTE]
Eebwana umenivunja mbavu mwanangu sasa kimto ndio kitasaidia? Nakumbuka kipindi fulani walisema simu nazo zinauwa nguvu toka siku hiyo jamaa yangu huwa anaweka simu yake kwenye mfuko wa shat anasema bora matatizo ya kifua kuliko kisasi.
Eebwana umenivunja mbavu mwanangu sasa kimto ndio kitasaidia? Nakumbuka kipindi fulani walisema simu nazo zinauwa nguvu toka siku hiyo jamaa yangu huwa anaweka simu yake kwenye mfuko wa shat anasema bora matatizo ya kifua kuliko kisasi.[/QUOTE]
LOL.Aithee, Kimto kinathaidia babaangu...maana joto linakuwa kwa juu tu ya kimto. Kwa chini temperature regulation ni poa kabisa, tafikiri kiubaridi cha pale kishumundu kwa kina manka. Labda niongese aluminium foil kwa chini ita reflect saidi. Nji hii inahitaji visasi vipya aisee.
Mkuu kuna software naijua inatumika na kitengo kimoja kazini kwetu. Ina predict radiation. Hiyo field inaniboa sijawahi kufuatilia, lakini nikiwauliza wanaweza kutoa jibu. They can predict how far radition will go....sasa mambo ya effects ndio inabidi wa-combine na technology ya medics.
Kuhusu simu, ngoja nitajitahidi nitafute picha au article inaonyesha jinsi gani radiation inaingia kichwani.
Sasa wakuu tusiokuwa na wake au wenza tufanyanyeje?
na hii nayo vipi?[/QUOTE]
Hii mimi huwa nashtuka sana saa nyingine huwa nagusa ofisi kama ziko sawa wakati natumia laptop.Mimi zile radiation zinanipa wasi wasi kweli kweli....kama alivyosema defuk nami huwa naweka kimto kupunguza makali lakini kwa kuwa natumia muda mrefu panapata joto kwa hio naona radioation zinapita.....sasa hivi siweki laptop mapajani naweka kwenye meza.....
Mwenye hata picha ya jinsi madhara haya tunaomba atuwekee