[Health] Science Says Bisexual Men Are Real

Plenty of people identify as bisexual, but scientists are still trying to figure out what that means in terms of physiological arousal and attraction.

In an unusual scientific about-face, researchers at Northwestern University have found evidence that at least some men who identify themselves as bisexual are, in fact, sexually aroused by both women and men.

A new study in the journal Biological Psychology claims to have at least shown that some men who say they’re bisexual actually get aroused by both men and women. And that’s a new result; a controversial 2005 study could not demonstrate bisexuality. That conclusion outraged bisexual men and women, who said it appeared to support a stereotype of bisexual men as closeted homosexuals.

This study does find it, perhaps because of the way researchers recruited participants. The new research focuses on self-identified bisexual men who’d had a romantic relationship of at least three months with at least one person of each sex, and at least two sexual partners of each sex – much more specific criteria than previous research used.

“The fact that we found it, especially using this kind of methodology, confirms that men with bisexual arousal patterns and bisexual identity definitely exist,” said Allen Rosenthal, lead study author and doctoral student at Northwestern University.

Still, only 35 bisexual men, 31 homosexual men and 34 heterosexual men from the Chicago area participated in the study, which is a relatively small sample size and geographically restricted. More research must be done to confirm these findings, and to see if they apply to a wider group of self-identified bisexuals.

Participants watched a series of three-minute videos, which included two videos depicting two women having sex and two videos depicting men having sex. While viewing these, the volunteers wore penile strain gauges to measure erectile response.

Results showed that men in the bisexual group showed bisexual patterns of arousal, both in terms of their subjective rating of the videos and the measured genital response. They were aroused by watching erotic videos of both male and female same-sex partners.

But the bisexual men’s responses also tended to suggest a preference for stimuli of one sex. It’s possible that generally bisexual men are attracted to both sexes, but to one more than the other; it’s also possible that they are more aroused by women sometimes and men other times.

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