News Release 

Harvard T.H. Chan School of Public Health and Apple formally launch women's health study

Groundbreaking study will collect and analyze data on menstrual and gynecological health to improve overall understanding of women's health needs. Study has potential to be largest study of its scope and scale.

Harvard T.H. Chan School of Public Health

Boston, MA - Harvard T.H. Chan School of Public Health, Apple, and the National Institutes of Health today launched the Apple Women's Health Study, a large-scale longitudinal study led by a team of researchers at Harvard Chan School that aims to advance understanding of menstrual and gynecological health.

This first-of-its-kind study will shed light on women's overall health needs across the lifespan and has the potential to become the largest and longest-running longitudinal study focused on women's health.

"Treating the menstrual cycle as a vital sign, such as heart rate or blood pressure, could lead to the earlier detection of many health conditions, both gynecological and systemic, as well as a better understanding of women's reproductive health and health needs overall," said study researcher Shruthi Mahalingaiah, assistant professor of environmental reproductive and women's health at Harvard Chan School. "We are uniquely poised to translate this data into discovery that will lead to better awareness and empowerment around women's health issues on a global scale."

Users can enroll and participate in the study by downloading the Apple Research app, available on iPhone. The study will collect data, such as cycle tracking information, and use monthly surveys to understand each participant's unique menstrual experience. The study, which will last many years, also seeks to analyze the impact of certain behaviors and habits, such as physical activity and mobility, on a wide breadth of reproductive health topics.

"In the past it's been very difficult to quantify behavioral factors," said study researcher Jukka-Pekka Onnela, associate professor of biostatistics at Harvard Chan School. "With data from smartphones and wearable devices, we can eventually measure these factors unobtrusively over long periods of time. This is scientifically incredibly exciting, and I believe that this research will enable more effective and more personalized interventions in the future."

Michelle A. Williams, a reproductive epidemiologist and dean of the faculty at Harvard Chan School, is leading the study as a principal investigator, along with Harvard Chan co-principal investigators Russ Hauser, Frederick Lee Hisaw Professor of Reproductive Physiology and chair of the Department of Environmental Health, and Brent Coull, professor of biostatistics and associate chair of the Department of Biostatistics.

"By working with Apple through the research app, we can enroll a large number of users who can participate in the study simply by using devices they use every day, helping us collect relevant study data over the course of many years - all while ensuring every participant has full control over their data and its privacy," said Williams, Angelopoulos Professor in Public Health and International Development. "Study participants will contribute to an effort we hope will ultimately enrich the public health community's understanding of these topics for generations to come."


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