Abstract
Dimensions of human mood, behaviour and vital signs cycle over multiple timescales. However, it remains unclear which dimensions are most cyclical, and how daily, weekly, seasonal and menstrual cycles compare in magnitude. The menstrual cycle remains particularly understudied because, not being synchronized across the population, it will be averaged out unless menstrual cycles can be aligned before analysis. Here, we analyse 241 million observations from 3.3 million women across 109 countries, tracking 15 dimensions of mood, behaviour and vital signs using a women’s health mobile app. Out of the daily, weekly, seasonal and menstrual cycles, the menstrual cycle had the greatest magnitude for most of the measured dimensions of mood, behaviour and vital signs. Mood, vital signs and sexual behaviour vary most substantially over the course of the menstrual cycle, while sleep and exercise behaviour remain more constant. Menstrual cycle effects are directionally consistent across countries.
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Large-scale diet tracking data reveal disparate associations between food environment and diet
Nature Communications Open Access 18 January 2022
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Data availability
Data that support the findings of this study are available from the corresponding author (J.L.) with appropriate permission from Clue. The data are not publicly available to preserve the privacy of Clue users.
Code availability
Code to reproduce the findings of this study is available at https://github.com/epierson9/four-cycles.
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Acknowledgements
The authors thank D. Jurafsky, P. Wei Koh, S. Li, A. Mastrioanni, M. Mateen, L. Pierson, R. Pierson, N. Roth, C. Ruiz, R. Sosic, P. Thaker, C. Yau, M. Zitnik and J. Zou for helpful comments. For financial support, they thank the Hertz and NDSEG Fellowships; the SAP Stanford Graduate Fellowship; NIH grant U54 EB020405; the Bill & Melinda Gates Foundation (INV-004841); the Stanford Data Science Initiative; NSF Grants IIS-1901386; OAC-1835598 (CINES), OAC-1934578 (HDR), CCF-1918940 (Expeditions) and IIS-2030477 (RAPID); Wu Tsai Neurosciences Institute; and the Chan Zuckerberg Biohub. The funders had no role in study design, data collection and analysis, decision to publish or preparation of the manuscript. J.L. is a Chan Zuckerberg Biohub investigator.
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E.P. performed the statistical analysis. E.P., T.A., D.T., P.H. and J.L. jointly analysed the results and wrote the paper.
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E.P. is employed by Microsoft Research. D.T. is employed by Clue by BioWink GmbH. P.H. is on the medical advisory board of Clue by BioWink GmbH. All other authors declare no competing interests.
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Pierson, E., Althoff, T., Thomas, D. et al. Daily, weekly, seasonal and menstrual cycles in women’s mood, behaviour and vital signs. Nat Hum Behav 5, 716–725 (2021). https://doi.org/10.1038/s41562-020-01046-9
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DOI: https://doi.org/10.1038/s41562-020-01046-9
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