This trial is studying whether taking daily dietary supplements of vitamin D3 or 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.
5 Primary · 3 Secondary · Reporting Duration: extension of follow-up through 7 years post trial closure
25871 Total Participants · 4 Treatment Groups
Primary Treatment: Vitamin D · Has Placebo Group · N/A
Age 18+ · All Participants · 1 Total Inclusion CriteriaMark “Yes” if the following statements are true for you: