Why do pheromones make women menstRuate at the same time?

Pheromones are chemical signals that can influence behavior and physiological responses among individuals of the same species. In women, it is suggested that exposure to the pheromones of other women can synchronize menstrual cycles, a phenomenon known as menstrual synchrony or the McClintock effect. This synchronization may have evolved as a means to enhance reproductive success and social bonding within a group. However, scientific evidence on this phenomenon remains mixed and is still a topic of ongoing research.