Earlier this week, I wrote about the possible antidepressant effects of semen in women. A 2002 study by psychologist Gordon Gallup hypothesizes that the vagina absorbs a host of mood-boosting hormones contained in semen, which makes women feel better. This would make it seem like vaginas and semen are BFFs, right?
Well, according to Dr. Gallup himself, that isn't the case. In fact, vaginas don't take too kindly sperm, and semen contains chemicals to neutralize sperm-attacking pathogens in the vagina. Speaking to Popular Science, Gallup said:
PopSci explains this antagonistic sperm-vagina relationship as an example of antagonistic coevolution. "In nature's sex wars, males campaign for more offspring-the proverbial seed-spreading-while females play hard-to-get because they bear most of the burden of reproduction and parenthood. "