Internet Lifesytle: Semen affects womens' moods

Semen makes you happy. That's the remarkable conclusion of a study comparing women whose partners wear condoms with those whose partners don't.

The study, which is bound to provoke controversy, showed that the women who were directly exposed to semen were less depressed. The researchers think this is because mood-altering hormones in semen are absorbed through the vagina. They say they have ruled out other explanations.

But is it really the semen that affects women's mood? The researchers say they looked at alternative explanations such as whether women who seldom use condoms took oral contraceptives, how often they had sex, the strength of relationships, and the possibility that having a certain type of personality influenced the decision to use condoms. But none of these factors can explain their findings, they say.

In fact, the results aren't a complete surprise because semen does contain several mood-altering hormones, including testosterone, oestrogen, follicle-stimulating hormone, luteinising hormone, prolactin and several different prostaglandins. Some of these have been detected in a women's blood within hours of exposure to semen.

The question many people will ask is whether oral sex could have the same mood-enhancing effects. "Since the steroids in birth control pills survive the digestion process, I would assume that the same holds true for at least some of the chemicals in semen," is what they say.

But why should semen have such an effect? "It makes no sense to me for this phenomenon to have evolved," says Satoshi Kanazawa, an evolutionary psychologist at the Indiana University of Pennsylvania. But Gallup counters that men whose semen promotes long-term mood enhancement might have more chances to indulge in sexual activity.

Internet Lifestyle