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Reproductive endocrinology

Menstrual cycle lengths—what can they tell us?

Short and long menstrual cycles have been associated with an increased risk of chronic diseases. Menstrual cycle length seems to be determined by the underlying hormonal profile—but could cycle length be a reliable indicator of hormone perturbations and disease risk in healthy regularly menstruating women?

Key Points

  • Menstrual cycle lengths provide insights into a woman's hormonal status

  • Cycle length measurement and readily available clinical information could be used to predict a woman's long-term risk of chronic diseases

  • Women could be educated about the associations between cycle length and the risk of chronic disease

  • Changes in cycle lengths might signify an adverse environment or ovarian aging

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Nader, S. Menstrual cycle lengths—what can they tell us?. Nat Rev Endocrinol 8, 704–706 (2012). https://doi.org/10.1038/nrendo.2012.179

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