By the end of 2017, we'll know who got vitamin D and who got the placebo, and whether the vitamin D group had lower rates of those health problems than the placebo group. I volunteered for the study because I had read so many promising reports about vitamin D and had a lot of questions: Does it prevent heart attacks and strokes? Does it reduce the risk of cancer? Does it prevent bone fractures? The VITAL study was designed to answer all three. We don't know which groups we're in - and neither do the researchers. We're also taking another capsule that contains either a gram of omega-3 fatty acids or a placebo. Every day we take identical pills, but half of us are getting 2,000 IU of vitamin D and the rest of us are taking a placebo. Like almost 26,000 other women and men, I'm part of the VITamin D and OmegA-3 TriaL, otherwise known as the VITAL study. I'm not sure what's in this little pill, but I've taken one with breakfast every day for more than two years and will keep taking them for at least two more years. This morning, I swallowed a small translucent capsule I'd popped out of the blister pack I keep next to the coffee pot.
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