Research Group
Nutritional Science
Sponsor
Brigham and Women's Hospital
Status
Unknown
ClinicalTrials.gov ID
For more information, see ClinicalTrials.gov NCT02239874
The VITamin D and OmegA-3 TriaL (VITAL; NCT 01169259) is an ongoing randomized clinical trial in 25,875 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. This ancillary study is being conducted among participants in VITAL and will examine whether vitamin D effects mammographic breast density, mammographic texture features, and gene expression profiles in breast biopsy tissue.
Intervention
Fish oil and vitamin D placebo, Vitamin D and fish oil, Vitamin D and fish oil placebo, Vitamin D placebo and fish oil placebo
Condition
Benign Breast Disease
Investigators
Rulla M Tamimi, ScD, Kathy Rexrode, MD