Patents, Paris, and a corporation: What does science tell us? He argues, however, that methodological critiques of menstrual cycle research and recent research indicate the menstrual synchrony does not occur among women. Women preferred men whose DNA was different enough from their own that it would increase the likelihood of producing a child with a robust immune system. In heterosexual men In homosexual women In women who are using oral contraceptives In sum, getting back to the question: Where next — mothers and babies So far, most human pheromone research has been fixated on sex pheromones — I guess the idea excites all of us, even scientists and science journal editors. But whether pheromones exist in humans and, more importantly, whether human sexual behavior is regulated by pheromones is doubtful. This may be because researchers have traditionally analyzed aromatics from armpits. Eric Palma The Truth About Pheromones Yes, scientists say, your airborne compounds send signals about your moods, your sexual orientation and even your genetic makeup After playing a sad movie scene for a group of women, researchers collected their tears and placed the unidentified fluid under men's noses. A pyramid of studies has been built on the brief product-placement footnote in the paper. The person should not be aware of the pheromones. Support for this hypothesis comes from Saxton and colleagues , who found in that young females, when exposed to AND, rate males at a speed dating event significantly more attractive, than females exposed to the control substance. Might a pheromone help explain the success of wet nursing? So, we give off body odor and our bodies excrete substances that pigs find sexually stimulating. Pheromones — chemical secretions that elicit unlearned behavioral or developmental responses from others of the same species — act to regulate sexual and reproductive behavior in many nonhuman mammals.