Homosexual men respond in the same way as women to pheromones, or odors believed by many to regulate sexual arousal, a new Swedish study shows, lending credence to the theory that homosexuality is biologically determined.
"We found that homosexual men react the same way as women do to the (testosterone derivative) androstadien pheromone: they get aroused," said Per Lindström, a physician at the neuroscience department at the Karolinska University Hospital and the co-author of a new study on the subject.
The report, titled "Brain response to putative pheromones in homosexual men", reveals that gays, unlike heterosexual men, are not aroused by the female pheromone estratetraen but are instead turned on by the same odors that get straight women's juices flowing.
"This shows that reactions to these pheromones are not linked to gender but to sexual preference," Lindström told AFP, admitting that the study of human pheromones is controversial.
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