In the second part of the experiment, participants had tubes containing the pheromones Androstadienone and Estratetraenol placed under their noses. It turned out that this time a part of the so-called hypothalamus, which plays a very important role in sexual behaviour, was stimulated.

In the case of heterosexual women and men, the reaction was expected. The hypothalamus of women reacted to Androstadienone and that of men to Estratetraenol. However, it was different for gay men.

It turned out that their brains were not stimulated by female hormones, but, as in the ladies, reacted to a testosterone derivative.

Sexual orientation a biological trait?

So, on the basis of their research, the Swedes confirmed that, firstly, our brain reacts differently to pheromones compared to the well-known scents, and secondly, they pointed to a link between sexual orientation and the brain.

Photo ojoimages

The reaction or non-reaction to specific chemical compounds is therefore determined not by biological sex, but by sexual preference. This was an extremely important discovery, as it confirms the thesis of differences in the structure and functioning of the brains of heterosexual and homosexual people, and indirectly proves that sexual orientation is a biological trait and not an acquired one.

Pheromones as a stimulator of sexual communication

The Swedish experiments were repeated with the same result by the team of neurophysiologist Charles Wysocki in Philadelphia. This one studied 82 people (homosexual and heterosexual men and heterosexual women) who were given one of two scents, taken from the bodies of other heterosexual and homosexual men and women.

This was a study that took more factors into account and, like the Swedish researchers, found that gay men preferred the scents of gay men, and reacted slightly less to those from heterosexual donors. Their body odours, on the other hand, were least attractive to heterosexual men and homosexual women.

Theresults of the experiments show that homosexual men and women choose different scents than heterosexual men and women, and that pheromones stimulate communication in people with the same sexual preferences.

Published studies, not only from Sweden, thus show that our mind subconsciously recognises the scent of 'sexual attraction', and the scent will tell us whether we prefer women or men.