Overview
A data collection study to develop algorithms to estimate menstrual cycle phases.
Eligibility
- Inclusion
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- Adults who are between 18 - 42 years old at enrollment and menstruate
- Capable of giving informed consent in Spanish or English
- Menstrual cycle lengths between 21- 45 days
- Have tracked menstruation for at least 3 menstrual cycles out of the prior 6 months
- Willing to wear a wrist-worn wearable device continuously for 6 months
- Willing to use an ovulation predictor kit for 6 months
- Willing to report vaccine history
- Owns a smartphone compatible with the study and has access to wi-fi
- Exclusion
- A citizen of the European Union or United Kingdom
- Trying to conceive during the six-month study period
- Have used specific forms of birth control in the 3 months prior to the study or planning on using specific birth control methods during the study duration
- Participant has undergone hormonal treatment in the past 3 months or planning to do so during the study
- Known history of health-related issues that affect their menstrual cycle, history of pelvic radiation, vasomotor symptoms, endometriosis, fibroids, polyps, ovarian cysts or known history of health-related issues that affect the physiology
- Currently (or within the past 3 months) engaged in health impacting behaviors
- Have been breastfeeding or pregnant in the past 6 months prior to the study
- On medications or taking substances that could affect their menstrual cycle or physiology
- Travel frequently such as crossing more than two time zones at least once every 2 weeks
- Have a known sleeping disorder or consistently work night shifts