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Your journey
1What's a trial
4Get in touch
More info
You can access this
clinical trial
if you have
Bone Density, Body Composition or Bone Health
and you are
over 50
years old
The phase for this study is not defined.
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The purpose

The VITamin D and OmegA-3 TriaL (VITAL; NCT 01169259) 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 fish oil (1 gram of omega-3 fatty acids) reduces the risk of developing cancer, heart disease, and stroke in people who do not have a prior history of these illnesses. This ancillary study is being conducted among a sub-cohort of 771 participants in VITAL and will test the efficacy and safety of high-dose vitamin D supplementation vs. placebo on skeletal health and body composition.

Provided treatments

  • : Vitamin D3 placebo
  • : Fish oil placebo
  • Drug: omega-3 fatty acids (fish oil)
  • : Vitamin D3

Locations near you

Unfortunately, there are no recruiting locations near you. Please check the list with all locations below.
Tris trial is registered with FDA with number: NCT01747447. The sponsor of the trial is Brigham and Women's Hospital and it is looking for 771 volunteers for the current phase.
Official trial title:
VITamin D and OmegA-3 TriaL: Effects on Bone Structure and Architecture