About the VITAL Study

Thank you video by
Dr. JoAnn Manson

National Vitamin D Guidelines Highlight the Need for the VITAL Trial

From Sun & Sea: New Study Puts Vitamin D and Omega-3s to the Test

Ancillary Studies

Study Q&A

Download issues of our newsletter

Contact Us

Brigham and Women's Hospital

BWH Division of Preventive Medicine

For Healthcare Providers

For VITAL Investigators


Click here to view
a thank you video
by Dr. JoAnn Manson

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Numbers to Know
For Your Heart’s Health
Click here to download an article about the 11 numbers you need to know to keep your heart healthy, including a chart to track them.






Comments on the Recent Report on Fish Oil and Prostate Cancer appear on the Q&A page.

Welcome to the VITAL Study

Welcome to the Web site of the VITamin D and OmegA-3 TriaL (VITAL) at Brigham and Women’s Hospital, an affiliate of Harvard Medical School, in Boston, Massachusetts. VITAL is an ongoing research study in 25,875 men and women across the U.S. investigating whether takingJoAnn daily dietary supplements of vitamin D3 (2000 IU) or omega-3 fatty acids (Omacor® fish oil, 1 gram) reduces the risk for developing cancer, heart disease, and stroke in people who do not have a prior history of these illnesses. Please click on Study Q&A to learn more about this important research endeavor.

The website is updated regularly to Juilekeep participants informed about the study’s progress, as well as health topics that we hope are of interest. We also answer frequently asked questions from participants on this website.

Thank you for your interest!

JoAnn Manson, MD
Julie Buring, ScD
VITAL Study Directors

Read more about JoAnn Manson.
Read more about Julie Buring.




VITamin D and OmegA-3 TriaL (VITAL Study)
Brigham and Women's Hospital, an affiliate of Harvard Medical School
900 Commonwealth Avenue East
Boston, Massachusetts 02215
Telephone: 1-800-388-3963
E-mail: vitalstudy@partners.org