The study published in Cancer Epidemiology, the International Journal of Cancer Epidemiology, Detection, and Prevention found that men who had slept with more than 20 women reduced their risk of developing all types of prostate cancer by 28 per cent.
They were also 19 per cent less likely to develop an aggressive form of the disease.
But that protection did not hold true for men who slept with men. Parent’s team found that having more than 20 male partners doubled the risk of prostate cancer compared to those who have never slept with a man. And their risk of getting a non-aggressive cancer was five times more likely. Sleeping with one man did not affect the risk.
Parent could not explain why it does not apply to gay encounters.
On the other hand, virgins who had never experienced sex were almost twice as likely to have prostate cancer as those who did.
Researchers suggest that this is the first study to show that having many female sex partners, over a lifetime, provided significant protection against the disease, perhaps because frequent ejaculations reduce the concentration of cancer-causing substances in prostatic fluid and other structures associated with cancer.
But Parent could not explain why that does not apply to gay encounters. Perhaps because men who sleep with men engage in more risky sexual behaviour, or that anal intercourse may result in trauma to the prostate, but that’s only speculation, Parent said. More studies are needed.
1. It could make you look younger
In 2013, Dr David Weeks, former head of old age psychology at the Royal Edinburgh Hospital, told a British Psychological Society conference that his research showed that men and women who have an active sex life look between five and seven years younger than their actual age. “Sexual satisfaction is a major contributor to quality of life, ranking at least as high as spiritual or religious commitment,” Dr Weeks said.
2. It could prevent you having a heart attack
In 2010 scientists at the New England Research Institute in Massachusetts published the results of a 16-year study, the Massachusetts Male Ageing Study, which analysed over 1000 men. The study found that men who had sex at least twice a week were up to 45 per cent less likely to develop life-threatening heart conditions than men who have sex less than once a month. Researchers said the benefits of sex could be due to both the physical and emotional effects on the body.
3. It could boost your immune system
Researchers at Wilkes University in Wilkes-Barre, Pennsylvania, found that people who have sex once or twice a week receive a boost to their immune system which could help ward off colds and flu. In the 1999 study, scientists measured levels of immunoglobulin A (IgA), an antigen found in saliva, and found a 30pc increase in IgA levels in those who had regular sex. However, Clifford Lowell, an immunologist at the University of California, warned that: “Sexually active people may be exposed to many more infectious agents than sexually non-active people.”
4. It could improve your brain function
In March 2013 scientists at the University of Pavia, Italy published the results of research which suggested that people who have regular sex, especially those in new relationships, displayed an increase in cranial nerve growth, crucial to mental alertness. The findings were supported by a separate study of male rats by scientists at Princeton University. Researchers divided the rats into two groups – one of which had its sexual activity severely limited – and found that the rats which mated more often displayed increased nerve growth.
5. It could make you less stressed at work
In 2006 researchers at the University of Paisley, Scotland, found that individuals who had more sex were better at dealing with stress. The study examined 22 men and 24 women over a two week period and found that those who had regular sex exhibited less of an increase in blood pressure when placed in stressful situations such as public speaking.