Menstrual synchrony : An update and review

Area of Science:

• Human Physiology
• Evolutionary Biology
• Social Sciences

Background:

• Menstrual synchrony, the apparent synchronization of menstrual cycles among women in close proximity, has been documented in several studies.
• Existing research suggests social contact, rather than shared environments, is a key factor in mediating this effect, particularly among friends and coworkers.

Purpose of the Study:

• To explore the underlying mechanisms and adaptive functions of human menstrual synchrony.
• To investigate the role of social proximity and potential biological cues in menstrual cycle synchronization.

Main Methods:

• This study synthesizes existing research on menstrual synchrony.
• It reviews evidence for the influence of social factors and olfactory cues.

Main Results:

• A broad consensus exists that social contact is crucial for menstrual synchrony.
• Evidence suggests olfactory cues may play a role, but this requires further investigation.

Conclusions:

• The precise mechanisms regulating menstrual synchrony are not yet fully understood.
• Further research is necessary to elucidate the biological and evolutionary underpinnings of this phenomenon.