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A 37-year-old member asked:

Why are our mensturation cycles synced in our house?

1 doctor answer1 doctor weighed in
Dr. Hector Chapa
Obstetrics and Gynecology 25 years experience
May or May not be: Menstrual synchrony (the mcclintock effect) is a phenomenon 1st reported in 1971. It's existance has not been definitively established, and studies investigating it are controversial. Those who claim it is real state it is due to pheromones, hormone signals, between women. Others claim it is just a random occurrance. Some studies disprove it, others state it is possible. It's still a "mystery".

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Last updated Dec 9, 2013

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