(( VaginaPagina ))

I don't know what it is about the pheromones exactly (we react VERY strongly to them, however - it's said they play a huge part in attraction and even mother-child bonding) but it's interesting to note that some women are "leaders" and some are "followers" when it comes to menstrual cycles. I participated in a grad student's thesis study on the subject and was found to be a "leader" - meaning that most women's cycles will eventually change to follow mine if they're not on hormonal BC. Some women who have irregular periods may just be more susceptible to the pheromones around them - and women like me may have stronger pheromone secretions - according to the student I did the study for.