Vitamin D and Omega-3 Trial (VITAL)

The VITamin D and OmegA-3 TriaL (VITAL) is a randomized clinical trial in 25,871 U.S. men and women investigating whether taking daily dietary supplements of vitamin D3 (2000 IU) or omega-3 fatty acids (Omacor® fish oil, 1 gram) reduces the risk of developing cancer, heart disease, and stroke in people who do not have a prior history of these illnesses.

Intervention

Fish oil placebo, Vitamin D3 placebo, omega-3 fatty acids (fish oil), vitamin D3

Condition

Cancer, Cardiovascular Disease

Investigators

See list of participating sites