The A4 study: Now is the time to join the fight to prevent Alzheimer's disease.

Welcome to the A4 Study

If you are a healthy older adult with normal memory, now is the time to join the fight to prevent Alzheimer’s disease.



Watch the A4 Study Video

Hear directly from Dr. Reisa Sperling and other Alzheimer’s disease experts explain the A4 study, share what makes the A4 study so unique, and why now is the time to participate.

Watch the A4 Study Video

What is the A4 Study?
The A4 study is a clinical trial for older individuals who may be at risk for Alzheimer's disease (AD). The study aims to prevent the memory loss associated with Alzheimer’s disease (AD).

About the A4 Study

Are you eligible?
The A4 study has specific eligibility requirements for potential participants. Review the requirements to learn if you can join the A4 study. If you have any questions regarding eligibility, contact the A4 study today.

Read Requirements

Find a Location Near You
The A4 study has multiple screening locations across North America and Australia, each set up to evaluate potential participants for the A4 study. Find a location near you.

View Locations

Learn More

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