Vitamin D and Omega-3 Trial

Vitamin D and Omega-3 Trial (VITAL) (VITamin D and OmegA-3 TriaL) is a 5 year trial to run from 2010 to determine the benefits of vitamin D and Omega-3 supplements on elderly Americans.^{[1] [2]}

It aims to enroll 20,000 participants (women 65 or over, men 60 or over) who will be randomized to one of four groups:^[2]

• daily vitamin D (2000 IU) and fish oil (1 g);
• daily vitamin D and fish-oil placebo;
• daily vitamin-D placebo and fish oil;
• daily vitamin-D placebo and fish-oil placebo.

Participants will answer annual questionnaires^[2] to determine effects on risk of cancer, heart disease, stroke, osteoporosis, diabetes, memory loss and depression.

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