Sexual Health - Women Forum - Synchronous menstrual cycles

Womens Health > Sexual Health - Women Forum > Synchronous menstrual cycles

Menstruation is a woman's normal monthly menstrual period. But what are the signs of abnormal periods? When is vaginal bleeding serious?...

Q: Synchronous menstrual cycles

asked by: DoctorQuestion on December 18th, 2007

hello,
i notice that women in same room or place have same periodtime. while i was in doorm or workplace all women in place got changed in their period time and after 4-5 months they had the same time with delay between 2-3 days..how can we explain that ?

Replies(1)

Dr. Nikola Gjuzelov , MD

replied on January 11th, 2008

Sexual Health - Women Answer A3501

Synchrony in menstrual cycles is believed to be caused by some sort of scent cue, or pheromone. Pheromones are airborne chemical signals produced by the glands in the skin. In animals, pheromones communicate information about sex and reproduction. Some skeptics, however, believe synchronous menstruation to be an anomaly and mere coincidence, however.

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