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Apple Women's Health Study

Who can join

Ages 18 and older · All sexes · Healthy volunteers welcome

Inclusion Criteria:

* Have menstruated at least once
* Be at least 18 years old (at least 19 years old in Alabama and Nebraska, at least 21 years old in Puerto Rico)
* Live in the United States of America
* Be comfortable communicating in written and spoken English
* Have installed the Apple Research app on your iPhone
* Not share your iCloud account or iPhone with anyone else
* Be willing and able to provide informed consent to participate in the study

About the study

This is an observational longitudinal study to advance the understanding of menstrual cycle and gynecologic health conditions including PCOS, infertility and breast cancer.The study will be hosted within the Research app(available on App Store), which allows a user to find, enroll, and participate in Apple-supported health-related research studies.

Sponsor: Apple Inc. · Participants: 500,000 · Started: Nov 14, 2019

Contact the study team

• Shruthi Mahalingaiah, MD · Phone: 617-432-1356

Official record on ClinicalTrials.gov — NCT04196595

Locations in the U.S.

Conditions

• Polycystic Ovary Syndrome
• Infertility

From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.