Yet sex is probably one of the most common, and certainly most pleasurable activities we humans experience-indeed essential for the survival of the species. Yet only a handful of studies exist to help us understand and enhance the health benefits:

• A study on aging from Duke in the 1970s found that for men the frequency of sexual intercourse was associated with lower death rates. For women the enjoyment of intercourse was associated with longer life.
• A Swedish study found increased risk of death in men who gave up sexual intercourse.
• A study published in 1976 found that sexual dissatisfaction was a risk factor for heart attacks in women. Now a new study published in the esteemed British Medical Journal offers more good news. The findings suggest that men who have frequent sex are less likely to die at an early age.

A decade later, researchers found that the death rate from all causes for the least sexually active men was twice as high as that of the most active. The death rate in the intermediate group was 1.6 times greater than for the active group. A similar pattern of longevity and frequency of orgasm was found for all causes of death, coronary heart disease, and other causes.

Of course many questions arise with this type of study. Does the frequency of orgasm cause the improved health? Does poor health cause lower sexual activity? Or does some other factor such as physical activity, alcohol, depressed mood, or "vital exhaustion" cause both poor health and less sexual activity? The researchers did find that strength of the results persisted even after adjusting for differences in age, social class, smoking, blood pressure, and evidence of existing coronary heart disease at the initial interview. This suggests a more likely protective role of sexual activity.

To quote the researchers:
"The association between frequency of orgasm and mortality in the present study is at least-if not more-convincing on epidemiological and biological grounds than many of the associations reported in other studies and deserves further investigation to the same extent. Interventions programs could also be considered, perhaps based on the exciting, 'At least five a day' campaign aimed at increasing fruit and vegetable consumption- although the numerical imperative may have to be adjusted."

More research is needed. Any volunteers?
Since the overall death rate was reduced 36% for an increase of 100 orgasm per year, one could easily imagine a new prescription for health:

Rx: Sexual Intercourse At least 2 x per week
Such a prescription might have few side effects and would be far more pleasurable than many other regimens often prescribed. And even if sex doesn't prove to add years to life, it may add life to years.

For More Information
Davey Smith G, Frankel S, Yarnell J: Sex and death: Are they related? Findings from the Caerphilly cohort study. British Medical Journal 1997;315(7123):1641-44.

Excerpted with permission from the Quarterly Newsletter, Mind/Body Health Newsletter. For subscription information call 1-(800)-222-4745 or visit the Institute for the Study of Human Knowledge website.