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Article Dans Une Revue Science Advances Année : 2024

Evidence that the woman’s ovarian cycle is driven by an internal circamonthly timing system

René Ecochard
John Stanford
Richard Fehring
Marie Schneider
Sam Najmabadi

Résumé

The ovarian cycle has a well-established circa-monthly rhythm, but the mechanisms involved in its regularity are unknown. Is the rhythmicity driven by an endogenous clock-like timer or by other internal or external processes? Here, using two large epidemiological datasets (26,912 cycles from 2303 European women and 4786 cycles from 721 North American women), analyzed with time series and circular statistics, we find evidence that the rhythmic characteristics of the menstrual cycle are more likely to be explained by an endogenous clock-like driving mechanism than by any other internal or external process. We also show that the menstrual cycle is weakly but significantly influenced by the 29.5-day lunar cycle and that the phase alignment between the two cycles differs between the European and the North American populations. Given the need to find efficient treatments of subfertility in women, our results should be confirmed in larger populations, and chronobiological approaches to optimize the ovulatory cycle should be evaluated.

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Dates et versions

hal-04544254 , version 1 (12-04-2024)

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René Ecochard, John Stanford, Richard Fehring, Marie Schneider, Sam Najmabadi, et al.. Evidence that the woman’s ovarian cycle is driven by an internal circamonthly timing system. Science Advances , 2024, 10 (15), ⟨10.1126/sciadv.adg9646⟩. ⟨hal-04544254⟩
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