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用進廢退——Erections: Use 'Em or Lose 'Em  

2008-07-12 14:01:55|  分类: 之初本善 |  标签: |举报 |字号 订阅

  下载LOFTER 我的照片书  |

勃起功能:用进废退

芬兰研究人员最新的研究指出,男性勃起功能不用则退,而经常性的性生活可预防勃起功能障碍。

研 究人员发现,每周至少有一次性生活的老年男性与性生活较少者相比,他们罹患勃起功能障碍的风险减半。作者同时强调,每周一次性生活也不要洋洋得意,因为性 事越多,勃起功能障碍的风险越小。每周至少有三次性生活的男性,与那些每周尚没有一次性生活的男性相比,前者罹患勃起功能障碍的可能性仅为后者的四分之 一。研究人员声称,就像体育锻炼可以保持机体功能一样,经常性的性生活同样也可维持勃起功能。

该发现来自一项对芬兰55-75岁男性的邮件问卷调查。对首次调查时无勃起功能障碍的989位男性纳入研究,5年后再次对他们进行问卷调查。他们的平均年龄为59岁,80%为已婚或同居者,一半以上体重超重,近一半至少患有一种慢性疾病。

该研究还发现,早晨勃起次数与勃起功能障碍风险之间无明显相关性。

研究人员指出,该项研究的遗憾之处是没有询问被调查者有关手淫的问题。而手淫也可能与性生活同样有预防勃起功能障碍的作用。研究人员最后表示,医生应该鼓励患者进行性生活。

该项研究结果发表在2008年7月出版的《美国医学杂志》上。

http://www.dxy.cn/bbs/post/view?bid=116&id=12256889&sty=1&tpg=1&age=0


 Erections: Use 'Em or Lose 'Em
Frequent Sex Protects Against Erectile Dysfunction

Reviewed By Louise Chang, MD

July 3, 2008 — Men who don't use their erections lose them, Finnish researchers find.

Aging men who have sex at least once a week have only half the risk of developing erectile dysfunction as do men who have sex less often.

But once-a-weekers shouldn't gloat. More sex means even less ED risk. Men who have sex at least three times a week are only one-fourth as likely to get erectile dysfunction as are men who have less-than-weekly sex.

"Regular sexual activity preserves potency in a similar fashion as physical exercise maintains functional capacity," conclude Juha Koskimaki, MD, PhD, and colleagues at the University of Tampere, Finland.

The findings come from questionnaires mailed to Finnish men aged 55 to 75. Only the 989 men who did not have erectile dysfunction at the beginning of the study — and who returned a second questionnaire five years later — were included.

Men with erectile dysfunction obviously have sex less often than do more potent men. But by including only men who did not have erectile dysfunction to start with, Koskimaki and colleagues believe their study strongly suggests that sexual intercourse lowers the risk of ED.

The average man in the study was 59 years old. Four out of five of the men were married or cohabitating. More than half of them were overweight, and nearly half had at least one chronic medical condition.

For such men, Koskimaki and colleagues find, sex less than once a week significantly increases the risk of erectile dysfunction. And compared to sex once a week, sex at least three times a week significantly decreases risk of erectile dysfunction.

Interestingly, the study found that men who have less than one morning erection per week are 2.5 times more likely to get erectile dysfunction as are men who have two or three morning erections per week. But having a morning erection every day did not lower a man's risk of erectile dysfunction.

One major limitation of the study, Koskimaki and colleagues note, is that they did not ask the men about masturbation, which might conceivably have the same salubrious effect on erectile dysfunction as intercourse. So as far as the researchers can tell, the study findings apply only to sex with another person.

"Doctors should support patients' sexual activity," they conclude.

Koskimaki and colleagues report their findings in the July 2008 issue of The American Journal of Medicine.

SOURCES: Koskimaki, J. The American Journal of Medicine, July 2008; vol 121: pp 592-596. News release, The American Journal of Medicine.
http://www.webmd.com/erectile-dysfunction/news/20080703/erections-use-em-or-lose-em


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