Apple Health Study for Mental Health, Sleep, Exercise, Hormones, and Metabolic Health

The Apple Health Study is an observational study looking at how information from apps and devices, like your iPhone, relates to your health. Researchers want to understand how this data can help predict, detect, monitor, and manage changes in your mental health, sleep, exercise, hormones, and metabolic health. You can join if you are at least 18 years old (or older in some states), live in the US, have an iPhone with the Apple Research app installed, and can communicate in English. The study will track your health status every six months for up to five years. This study is fully remote, meaning you can participate from home using your iPhone.

Study design: This is an observational study with a planned enrollment of 500,000 participants. It is not specified if it is randomized or blinded.
What's involved: You will be asked to complete tasks and surveys using your iPhone and the Apple Research app, including selecting the types of health and sensor data you want to share.
Compensation: Not stated in the trial record.
Follow-up: Your health status will be measured at the beginning of the study and every 6 months until the study ends, which could be up to 5 years.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.

Apple Health Study

Recruiting

Not specifiedAges 18+Observational

Apple Inc.

~500,000 participants

Updated 2025-07-29 on ClinicalTrials.gov

At a glance

Recruiting sites

2 of 2 listed sites are recruiting right now

RecruitingSuspended, closed, or not yet open

What they're measuring

Health Status

Measured over Baseline and every 6 months until study end (up to 5 years)

Conditions

Mental Health

Sleep

Exercise

Hormones

Metabolic Health

Hearing

Aging

Lifestyle Factors

Functional Capacity

Neurological Conditions

General Health

Wellbeing

Women's Health

Where it's being run

2 sites across 2 states

District of Columbia1

Massachusetts1

Study leadership

Calum MacRae, MD, PhD · PRINCIPAL_INVESTIGATOR · Brigham and Women's Hospital
Tiffany Avery, MD · PRINCIPAL_INVESTIGATOR · MCRA

Who to contact

MCRA Study Call Center

[email protected]

833-600-6993

Email the study team

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Do you actually qualify for this trial?

Add a private profile and we'll compare every criterion below against your situation — and tell you which ones are met, uncertain, or excluding.

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Eligibility criteria

Inclusion

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;

Have an iPhone;

Have installed Apple Research app on your iPhone;

Be comfortable communicating in written and spoken English;

Be willing and able to provide informed consent to participate in the Study.

Exclusion

Share your iCloud account, iPhone, or devices that collect health data such as Apple Watch with anyone else, because it could result in sharing another person's health information with the Study, making it challenging for researchers to use your information.

What this trial measures

Health StatusBaseline and every 6 months until study end (up to 5 years)
Assessed by participant self-report as well as clinical health records and claims data. The initial count and change over time in the number and type of health conditions such as cardiovascular, circulatory, cognition, hearing, mental health, metabolic, mobility, neurologic, respiratory, sex and gender, reproduction, hormones, sleep, and health events such as hospitalizations, procedures or falls.

Trialytics