Fish oil supplements

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Update Your Vitamins, Lower Your Age
Not long ago, many people were popping antioxidants—vitamins A, C and E, selenium, and several other nutrients—with abandon. Antioxidants were credited with fighting everything from heart disease and cancer to sniffles. No longer. The latest science suggests that big doses of these pills are duds. But shouldn't you still take a multivitamin? Probably not. "The current data show that multivitamins simply don't help most people," Dr. Roach says.

Meanwhile, some individual nutrients—particularly vitamin D3 and omega-3—have switched from bit players to likely all-stars. "Although the jury is still out on D's effect on heart disease, there's major new evidence supporting its ability to cut rates of breast and colon cancer, and nearly everybody agrees most Americans need extra vitamin D for their bones to prevent or treat osteoporosis," Dr. Roach says.

As for those omega-3 supplements, RealAge says you need them to keep your heart and brain young and healthy. That's because their top source is fatty fish (salmon, sardines, more), and Americans just aren't big fish eaters. To get 600-900 mg a day, the amount Dr. Roizen advises, supplements are often the only way.