MESSAGE
DATE | 2004-12-09 |
FROM | From: "Inker, Evan"
|
SUBJECT | Subject: [hangout] Researchers warn laptop users of infertility risk
|
From owner-hangouts-destenys-at-mrbrklyn.com Thu Dec 9 17:26:00 2004 X-UIDL: \-!#!RO2!!A"l!!c7$!! Received: from www2.mrbrklyn.com (localhost [127.0.0.1]) by mrbrklyn.com (8.12.11/8.11.2/SuSE Linux 8.11.1-0.5) with ESMTP id iB9MQ0JW006663 for ; Thu, 9 Dec 2004 17:26:00 -0500 Received: (from mdom-at-localhost) by www2.mrbrklyn.com (8.12.11/8.12.3/Submit) id iB9MQ0Lp006662 for hangouts-destenys; Thu, 9 Dec 2004 17:26:00 -0500 X-Authentication-Warning: www2.mrbrklyn.com: mdom set sender to owner-hangouts-at-www2.mrbrklyn.com using -f Received: from mail68.messagelabs.com (mail68.messagelabs.com [193.109.255.67]) by mrbrklyn.com (8.12.11/8.11.2/SuSE Linux 8.11.1-0.5) with SMTP id iB9MPxEA006656 for ; Thu, 9 Dec 2004 17:25:59 -0500 X-VirusChecked: Checked X-Env-Sender: EInker-at-gam.com X-Msg-Ref: server-6.tower-68.messagelabs.com!1102631170!34069042!1 X-StarScan-Version: 5.4.2; banners=-,-,- X-Originating-IP: [193.202.231.222] Received: (qmail 1825 invoked from network); 9 Dec 2004 22:26:10 -0000 Received: from unknown (HELO w2gw-ldn01.gam.com) (193.202.231.222) by server-6.tower-68.messagelabs.com with SMTP; 9 Dec 2004 22:26:10 -0000 Received: from ntas-ldn15.gam.com (unverified) by w2gw-ldn01.gam.com (Content Technologies SMTPRS 4.3.12) with ESMTP id for ; Thu, 9 Dec 2004 22:26:10 +0000 Received: by ntas-ldn15.gam.com with Internet Mail Service (5.5.2653.19) id ; Thu, 9 Dec 2004 22:26:10 -0000 Message-ID: <386AEEE1B7BAC34CB4DDF394C2349278D6E903-at-w2cs-nyk02.gam.com> From: "Inker, Evan" To: hangout-at-nylxs.com Subject: [hangout] Researchers warn laptop users of infertility risk Date: Thu, 9 Dec 2004 22:24:39 -0000 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-Type: multipart/related; boundary="----_=_NextPart_000_01C4DE3D.DF798170"; type="multipart/alternative" Sender: owner-hangouts-at-mrbrklyn.com Precedence: bulk Reply-To: "Inker, Evan" List: New Yorker GNU Linux Scene Admin: To unsubscribe send unsubscribe name-at-domian.com in the body to hangout-request-at-www2.mrbrklyn.com X-Spam-Checker-Version: SpamAssassin 3.0.0 (2004-09-13) on www2.mrbrklyn.com X-Spam-Status: No, score=-0.8 required=4.0 tests=AWL,BAYES_00,HTML_20_30, HTML_CONVERTED,HTML_MESSAGE,HTML_NONELEMENT_00_10, RAZOR2_CF_RANGE_51_100,RAZOR2_CHECK autolearn=no version=3.0.0 X-Spam-Level: X-Keywords: X-UID: 38907 Status: RO Content-Length: 11272 Lines: 255
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Researchers warn laptop users of infertility risk Years of frequent laptop use 'may cause irreversible' problems, they say http://www.computerworld.com/mobiletopics/mobile/laptops/story/0,10801,98152 ,00.html?source=NLT_PM 2,00.html?source=NLT_PM&nid=98152> &nid=98152 News Story by Laura Rohde DECEMBER 09, 2004 (IDG NEWS SERVICE) - Laptops should be used as desktops if men want to protect their reproductive health, according to a new study published today.
A combination of the heat generated by a laptop and the position of the thighs that 's needed to balance the computer leads to higher temperatures around a man's genitals and over time can result in decreased sperm production, according to the study "Increase in Scrotal Temperature in Laptop Computer Users," which was published in the U.K. journal Human Reproduction.
Though further research is needed, teenage boys and young men should limit the use of computers on their laps, said Dr. Yefim Sheynkin, the leader of the State University of New York at Stonybrook research team responsible for the article. "It's possible that external protective devices could help," he said.
There will be 60 million laptops in the U.S. and 150 million worldwide by next year, Sheynkin said. Laptops have become more popular with teenage boys and young men due to continued improvements in power, size and price, and they're currently outselling desktop computers, he said.
Twenty-nine volunteers between the ages of 21 and 35 took part in the study. Researchers measured their scrotal temperature, with and without laptops, during two one-hour sessions performed on different days, in a room where the temperature was about 71.6 degrees Fahrenheit.
When the men held their thighs together in order to balance a laptop that was turned off, their scrotal temperatures rose by 3 degrees Fahrenheit. But when the laptop was in use, temperatures rose by 4 degrees on the left of the scrotum and 5 degrees on the right. The laptops were turned on and allowed to run for 15 minutes before being placed on the subjects' laps.
"The body needs to maintain a proper testicular temperature for normal sperm production and development," Sheynkin said. "Portable computers in a laptop position produce scrotal hyperthermia by both the direct heating effect of the computer and the sitting position necessary to balance the computer." Scrotal hyperthermia leads to decreased fertility, known as clinical subfertility, in men.
The study found that scrotal temperature in the men had risen by just over 1 degree Fahrenheit in 15 minutes of computer use. After one hour of use, the surface temperature of the laptops rose from around 88 degrees to nearly 104 degrees.
Sheynkin said it was unclear just how much additional heat could cause scrotal hyperthermia, but past studies suggest that a small scrotal temperature increase above baseline temperatures could have negative effects.
Sheynkin warned that years of frequent laptop use "may cause irreversible or partially reversible changes in male reproductive function."
Regards,
Evan M. Inker (New York) x. 4615
**************************************************************************** This message contains confidential information and is intended only for the individual or entity named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. E-mail transmission cannot be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept liability for any errors or omissions in the contents of this message which arise as a result of e-mail transmission. If verification is required please request a hard-copy version. This message is provided for informational purposes and should not be construed as an invitation or offer to buy or sell any securities or related financial instruments. GAM operates in many jurisdictions and is regulated or licensed in those jurisdictions as required. ****************************************************************************
------_=_NextPart_001_01C4DE3D.DF798170 Content-Type: text/html Content-Transfer-Encoding: quoted-printable
Message
size=3D2>Researchers warn laptop users of= infertility risk Years of frequent lapt= op use=20 'may cause irreversible' problems, they say
NT=20 face=3D"Times New Roman">News Story by = Laura=20 Rohde
src=3D"http://www.computerworld.com/computerworld/images/clear.gif" width= =3D6=20 border=3D0> Roman"=20 size=3D3>DECEMBER 09, 2004 EW>(IDG=20 NEWS SERVICE) - Laptops should be used as desktops if men want t= o=20 protect their reproductive health, according to a new study published today= .=20
A combination of the heat generated by a laptop and the position of the= thighs that 's needed to balance the computer leads to higher temperatures= around a man's genitals and over time can result in decreased sperm produc= tion,=20 according to the study "Increase in Scrotal Temperature in Laptop Computer= Users," which was published in the U.K. journal Human Reproduction.= Though further research is needed, teenage boys and young men should li= mit=20 the use of computers on their laps, said Dr. Yefim Sheynkin, the leader of = the=20 State University of New York at Stonybrook research team responsible for th= e=20 article. "It's possible that external protective devices could help," he sa= id.=20
There will be 60 million laptops in the U.S. and 150 million worldwide b= y=20 next year, Sheynkin said. Laptops have become more popular with teenage boy= s and=20 young men due to continued improvements in power, size and price, and they'= re=20 currently outselling desktop computers, he said.=20
Twenty-nine volunteers between the ages of 21 and 35 took part in the st= udy.=20 Researchers measured their scrotal temperature, with and without laptops, d= uring=20 two one-hour sessions performed on different days, in a room where the=20 temperature was about 71.6 degrees Fahrenheit.=20
When the men held their thighs together in order to balance a laptop tha= t was=20 turned off, their scrotal temperatures rose by 3 degrees Fahrenheit. But wh= en=20 the laptop was in use, temperatures rose by 4 degrees on the left of the sc= rotum=20 and 5 degrees on the right. The laptops were turned on and allowed to run f= or 15=20 minutes before being placed on the subjects' laps.=20
"The body needs to maintain a proper testicular temperature for normal s= perm=20 production and development," Sheynkin said. "Portable computers in a laptop= position produce scrotal hyperthermia by both the direct heating effect of= the=20 computer and the sitting position necessary to balance the computer." Scrot= al=20 hyperthermia leads to decreased fertility, known as clinical subfertility, = in=20 men.=20
The study found that scrotal temperature in the men had risen by just ov= er 1=20 degree Fahrenheit in 15 minutes of computer use. After one hour of use, the= surface temperature of the laptops rose from around 88 degrees to nearly 1= 04=20 degrees.=20
Sheynkin said it was unclear just how much additional heat could cause= scrotal hyperthermia, but past studies suggest that a small scrotal temper= ature=20 increase above baseline temperatures could have negative effects.=20
Sheynkin warned that years of frequent laptop use "may cause irreversibl= e or=20 partially reversible changes in male reproductive function."
Regards,
Evan M. Inker (New York) x.= 4615
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