男人一生與多個女人發生性關系有助于降低前列腺癌
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Sex with more than 20 women helps reduce prostate cancer: study
Diet & Fitness
DateOctober 29, 2014 154 reading now(153)
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Tom Decent
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Men who have many women partners less likely to develop prostate cancer, researchers say: a scene from the film The Lovers. Photo: Supplied
Men who have sex with more than 20 women during the course of their lifetimes are less likely to be diagnosed with prostate cancer, new research shows.
But for homosexuals who have had sex with at least 20 men and virgins, the risk of being diagnosed is doubled, the researchers from the University of Montreal have found.
Compared with men who have had just one sexual partner, men who have slept with 20 or more women have a 28 per cent lower risk of being diagnosed, and are 19 per cent less likely to develop the most aggressive form of prostate cancer.
A CT scan of the prostate Photo: Supplied
However, the researchers found that homosexual men who have had at least 20 sexual partners, were twice as likely to to develop prostate cancer compared with those in monogamous relationships.
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Homosexual men were also five times more likely to develop a less serious form of the disease than those with only one male partner.
The "highly speculative" hypothesis to explain this increased risk for homosexual men is that there is a heightened risk of picking up a sexually transmitted disease and "physical trauma" to the prostate from anal intercourse.
A prostate cancer cell. Photo: Supplied
Between 2005 and 2009, 3208 men participated in the Prostate Cancer & Environment Study and were asked to give information about their lifestyles and sexual experiences.
In this time frame, 1590 men who participated in the study were diagnosed with prostate cancer..
The research, published in the journal Cancer Epidemiology, is the first of its kind to make a link between the number of sexual partners and the risk of developing cancer.
Lead researcher Marie-Elise Parent said that, despite the results, she did not see a need for public health authorities to encourage men to have sex with as many women as possible.
"It is possible that having many female sexual partners results in a higher frequency of ejaculations, whose protective effect against prostate cancer has been previously observed in cohort studies," Dr Parent said
The research found that men who had never had sexual intercourse, were twice as likely to be diagnosed with prostate cancer.
Prior studies have indicated sexual intercourse might help reduce the risk of prostate cancer because it lowers the concentration of carcinogenic crystal-like substances in the fluid of the prostate.
"We were fortunate to have participants from Montreal who were comfortable talking about their sexuality, no matter what sexual experiences they have had, and this openness would probably not have been the same 20 or 30 years ago," Dr Parent said.
"Indeed, thanks to them, we now know that the number and type of partners must be taken into account to better understand the causes of prostate cancer."
Read more: http://www.smh.com.au/lifestyle/diet-and-fitness/sex-with-more-than-20-women-helps-reduce-prostate-cancer-study-20141029-11ddnd.html#ixzz3HVKNWZd2
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估计是假新闻
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这样啊，老外的报纸也学会搞假新闻了？
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研究就管自己要的结论，其他不管，所以
保重
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与这么多人搞，没有病才怪呢
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今天的新闻都要倒过来看了
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是的，博人眼球。
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真是天下乌鸦一般黑啊，假新闻泛滥！
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虾扯蛋
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得艾滋或性病的概率耶高的
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你没翻译准确，那个20跑哪里去了？
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没翻译啊
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下一步的科研目标应该是：男人与72个处女发生过性行为的，可以免于前列腺癌的困扰！
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要想知道梨子的滋味，就要亲口尝一尝
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听说还有研究报告说手淫对身体健康的好处呢，乱扯的太多了
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5 Health Benefits of MasturbationFive reasons you should spend some, err—alone time—today
By Maridel Reyes, December 29, 2011
Image from Thinkstock
inShare. Science has shown that masturbating can provide plenty of healthy benefits.
A new survey from adult product peddler AdamandEve.com reveals that 27 percent of Americans admit to masturbating once or twice a week.
That number seems suspiciously low to us, especially since science has shown that being master of your domain can provide additional feel-great benefits. (Also because the people surveyed were browsing an adult toy website.) “Masturbation is part of a healthy sex life,” says Gloria Brame, Ph.D., a clinical sexologist. “It’s totally safe and harmless. It’s healthier than brushing your teeth every day.”
And just as brushing your teeth should be a regular occurrence, so too should be cleaning your pipes. Here are 5 reasons to take matters into your own hands right now. (You’re welcome.)
It prevents cancer. A 2003 Australian study found that men who ejaculated more than five times a week were a third less likely to develop prostate cancer. Disease-causing toxins build up in your urogenital tract and when you rub one out, you flush the bad guys out of your system, says Brame.
It makes you harder. As you age, you naturally lose muscle tone … even down there. Regular sex or masturbation works out your pelvic floor muscles to prevent erectile dysfunction and incontinence. “It keeps the angle of your dangle perky,” says Brame. Aim to (ahem) arrive 3 to 5 times a week for rock-solid results.
It helps you last longer. Taking yourself to palm prom may help you stretch your sack sessions. “[Masturbating] an hour before a date will give you more control,” says Brame. Train yourself by timing how long it takes you to orgasm, suggests Ava Cadell, Ph.D., founder of loveologyuniversity.com. If it usually takes two minutes solo, try for three next time. Or count how many strokes you need to get to your happy place. If you’re spurting after 50, shoot for 60. “Most men can double the number of strokes and the time within one month,” Cadell says. Practice makes perfect, right?
It ups your immunity. Ejaculation increases levels of the hormone cortisol, says Jennifer Landa, M.D., a specialist in hormone therapy. Cortisol, which usually gets a bad rap as a havoc-wrecking stress hormone, actually helps regulate and maintain your immunity in the small doses. “Masturbation can product the right environment for a strengthened immune system,” she says.
It boosts your mood. Masturbating releases a slew of feel-good neurochemicals like dopamine and oxytocin that lift your spirits, boost your satisfaction, and activate the reward circuits in your brain. “An orgasm is the biggest non-drug blast of dopamine available,” says Brame. “A brain scan of someone having an orgasm looks like a heroin addict’s."
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也可能是真的
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瞎扯
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油腻
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A study shows the result may not be suitable to Chinese because this week a Phd candidate in Wuhan, China died after donating sperm third time in a week.
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