[cnn-photo-caption image=http://i2.cdn.turner.com/cnn/2008/HEALTH/diet.fitness/11/13/ep.vitamin.primer/vitamin.comp.4way.jpg caption="Our experts (clockwise from top left): Dr. Melina Jampolis, Dr. Andrew Weil, Dr. Walter Willett, Dr. Christiane Northrup"]
CNN Medical Correspondent
Americans love to take their vitamins. More than 150 million Americans take dietary supplements according to the Council for Responsible Nutrition, a supplement industry trade group.
But what should you do? Walk through the vitamin aisle of any grocery store, and you're hit by a staggering array of options. From vitamin A to glucosamine to milk thistle (what is that, anyway?) to whey protein, it's hard to decide what to take.
That's why this week the Empowered Patient asked four experts - all medical doctors - what supplements they take every day. Their lists may surprise you - they all take at least two supplements - some take three or four or more.
Choosing a daily vitamin regimen is especially daunting in light of two new studies out this week. In the largest and longest study of its kind, researchers at Brigham and Women's Hospital in Boston, Massachusetts, found that vitamins C and E do nothing to protect against heart disease in men. The study, published in The Journal of the American Medical Association, also found that vitamin E even appeared to raise the risk of bleeding strokes, which, while rare, are often the most deadly. Other research on women and vitamins is also discouraging.
A study in the Journal of the National Cancer Institute this week found that a daily regimen of vitamin D and calcium did not offer any protection against invasive breast cancer.
With those studies in mind, here's what our panel of experts takes every day.
Anderson Cooper goes beyond the headlines to tell stories from many points of view, so you can make up your own mind about the news. Tune in weeknights at 8 and 10 ET on CNN.
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