小心了:
移动电话使用可能导致精子计数严重降低。每天使用移动电话一小时以上,精子计数降低25-50%!
(我的“每周医学参考"里有这条消息。暂时未辨真假,仅供参考)
Mobile phones adversely affect male sperm counts
By ANI
Tuesday October 24, 12:52 PM
London, Oct 24(ANI): Researchers have warned that the radiation or heat generated from cell phones could be the causing men who spend hours on their phones to have lower sperm counts than usual.
The US study found that both the quantity and quality of a man's sperm declined as his daily mobile use increased.
The findings suggest that millions of men may encounter difficulties in fathering a child due to the widespread use of mobile phones, and offers another possible explanation for declining fertility levels among males.
In the past decade there has been a steep fall in male fertility leves, which has beenl blamed on increasing obesity, smoking, stress, pollution and 'gender-bending' chemicals which disrupt the hormone system.
In an observational study carried out in Cleveland, Mumbai and New Orleans, 360 men who were undergoing evaluation for infertility were divided into three groups according to their sperm count.
The study found that men who used a mobile for more than four hours a day had a 25% lower sperm count than men who never used a mobile.
While the men with highest usage had a 50 per cent drop in the number of properly formed sperm, with just one-fifth looking normal under a microscope.
" People use mobile phones without thinking twice what the consequences may be. It is just like using a toothbrush but mobiles could be having a devastating effect on fertility. It still has to be proved but it could have a huge impact because mobiles are so much part of our lives," the Daily Mail quoted Professor Ashok Agarwal, director of the Reproductive Research Centre at the Cleveland Clinic, Ohio, who led the study, as saying.
Prof Agarwal said the most likely mechanism was damage to sperm-making cells in the testes caused by electromagnetic radiation or heat, although a fall in hormone production could also affect sperm motility and sperm DNA.
"These cells in the testes have been shown to be susceptible to electromagnetic waves in previous research in animals. Somehow electromagnetic waves may be causing direct damage to these cells and that perhaps causes a decrease in sperm production," he said.
Mobiles may also increase temperature in the groin, if a man was wearing it on a belt or carrying it around in a pocket.
He however says that it is too early to advise men trying to start a family about whether they should limit their mobile phone use.
"We still have a long way to go to prove this but we have just had another study approved," he said. (ANI)
- Re: 移动电话使用可能导致精子计数严重降低posted on 10/28/2006
What's the big deal? Look at the bright side.
No more condoms. :) - Re: 移动电话使用可能导致精子计数严重降低posted on 10/29/2006
八十一子 wrote:每天使用移动电话一小时以上,精子计数降低25-50%!
小心了:
放心了:每天坚持用两小时移动电话,任何婚内婚外的激烈行为都不至于造成后遗之症
省钱省心了涅 - Re: 移动电话使用可能导致精子计数严重降低posted on 10/29/2006
Men waste them by the bushels every time, every day, anyway. - posted on 10/29/2006
devil wrote:
Men waste them by the bushels every time, every day, anyway.
Not necessarily a waste. The reason that sexual reproduction is superior compared with non-sexual one is that the former allows the organism to achieve diversity and at the same time maintain stability in the genetic make-up of the offspring.
The main purpose of the male reproductive system is to ensure diversity. That only one of the tens of millions of sperms has a chance is to ensure that a huge number of changes have been made, packed, and ready to be inherited by the next generation, as each of the sperms is somewhat unique in genetic make-up.
On the other hand, the purpose of the female reproductive system is to ensure stability in inheritance. That only a very limited number of eggs - some 300 to 400 mature oocytes in the entire life of a woman - are available is to ensure that any one of the offspring is not very different from another, and all of them carry the genes that have enabled the survival of the species.
By the way, precisely for the same reason, cloning as a main means of reproduction will never work. Unfortunately, males will always be needed no matter how bad or useless they are. :-) - Re: 移动电话使用可能导致精子计数严重降低posted on 10/30/2006
It's darn inefficient. It's like American sperms trying to catch a Bin Laden egg.
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