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Your Health is
Sex Necessary?
Alan Farnham
Fans of abstinence had better be sitting
down. "Saving yourself" before the big game, the big business deal,
the big hoedown or the big bakeoff may indeed confer some moral
benefit. But corporeally it does absolutely zip. There's no evidence
it sharpens your competitive edge. The best that modern science can
say for sexual abstinence is that it's harmless when practiced in
moderation. Having regular and enthusiastic sex, by contrast,
confers a host of measurable physiological advantages, be you male
or female. (This assumes that you are engaging in sex without
contracting a sexually transmitted disease.)
In one of the most credible studies
correlating overall health with sexual frequency, Queens University
in Belfast tracked the mortality of about 1,000 middle-aged men over
the course of a decade. The study was designed to compare persons of
comparable circumstances, age and health. Its findings, published in
1997 in the British Medical Journal, were that men who
reported the highest frequency of orgasm enjoyed a death rate half
that of the laggards. Other studies (some rigorous, some less so)
purport to show that having sex even a few times a week has an
associative or causal relationship with the following:
- Improved sense of smell: After
sex, production of the hormone prolactin surges. This in turn causes
stem cells in the brain to develop new neurons in the brain's
olfactory bulb, its smell center.
- Reduced risk of heart disease: In
a 2001 follow-on to the Queens University study mentioned above,
researchers focused on cardiovascular health. Their finding? That by
having sex three or more times a week, men reduced their risk of
heart attack or stroke by half. In reporting these results, the
co-author of the study, Shah Ebrahim, Ph.D., displayed the
well-loved British gift for understatement: "The relationship found
between frequency of sexual intercourse and mortality is of
considerable public interest."
- Weight loss, overall fitness: Sex,
if nothing else, is exercise. A vigorous bout burns some 200
calories--about the same as running 15 minutes on a treadmill or
playing a spirited game of squash. The pulse rate, in a person
aroused, rises from about 70 beats per minute to 150, the same as
that of an athlete putting forth maximum effort. British researchers
have determined that the equivalent of six Big Macs can be worked
off by having sex three times a week for a year. Muscular
contractions during intercourse work the pelvis, thighs, buttocks,
arms, neck and thorax. Sex also boosts production of testosterone,
which leads to stronger bones and muscles. Men's Health
magazine has gone so far as to call the bed the single greatest
piece of exercise equipment ever invented.
- Reduced depression: Such was the
implication of a 2002 study of 293 women. American psychologist
Gordon Gallup reported that sexually active participants whose
male partners did not use condoms were less subject to depression
than those whose partners did. One theory of causality:
Prostoglandin, a hormone found only in semen, may be absorbed in the
female genital tract, thus modulating female hormones.
Screening mammograms before age 50 should not be done
routinely and should be based on a woman's values regarding the
risks and benefits of mammography.
Above from U.S.
Preventive Services Task Force (USPSTF)
