New theory suggests female orgasms are an evolutionary leftover
The human body is a mysterious little organism. Why do men have nipples? What’s the deal with pinky toes? And does the female orgasm serve a purpose other than pleasure?
Surveys suggest only one-third of women are regularly fully aroused during intercourse. And although poor partner performance, psychological issues, or physiological shortfalls are often cited as the reason, two evolutionary biologists now offer a provocative new explanation.
In a paper they argue that female orgasm is an evolutionary holdover from an ancient system, seen in some other mammals, in which intercourse stimulated important hormonal surges that drive ovulation.
Humans and other primates don’t need intercourse to trigger ovulation—they evolved to a point where it happens on its own—but the hormonal changes accompanying intercourse persist and fuel the orgasms that make sex more enjoyable, the biologists hypothesize. And because those hormonal surges no longer confer a biological advantage, orgasms during intercourse may be lost in some women.
Article:http://www.sciencemag.org/news/2016/08/new-theory-suggests-female-orgasms-are-evolutionary-leftover #research #ovulation #orgasm #reproduction #evolution