Never heard of pheromones? Well, it's time to learn about the role they play in your sex life, because it could be substantial. The concept of a human pheromone, or smell of sexual attraction, it has been debated and studied for years.
In most animals, the relationship between pheromones and mating is straightforward. Sea urchins, for example, release pheromones into the surrounding water, sending a chemical message that triggers other urchins in the colony to eject their sex cells simultaneously.
Human Pheromones, by contrast, are highly individualized, and not always noticeable. In 1986 Dr. Winifred Cutler, a biologist and behavioral endocrinologist, discovered pheromones in our underarms. She and her team of researchers found that once there was no drop of sweat under their arms, what remained were the odorless materials containing the pheromones.
The original studies by Dr. Cutler in the 70 showed that women who have regular sex with men have more regular menstrual cycles than women who have casual sex. Habitual sex delayed the decline of estrogen and made women more fertile. This led the research team to find what the man was giving into the equation. In 1986 they realized that it was the pheromones.