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    Drink Your Orange Juice -- It's Good for Your Bones

    WebMD Health News
    Reviewed by Gary D. Vogin, MD

    Feb. 8, 2001 -- Want to make sure that your bones stay healthy and strong? Then start "boning" up on your vitamin C. Researchers have found that postmenopausal women who took vitamin C supplements had a higher bone density than those who didn't. The highest bone densities were also found in the women who were taking more than 1,000 mg/d.

    Our body needs vitamin C for a number of reasons, one of them being collagen production. Collagen is a substance that forms the body's connective tissues, which includes bones. Scientists have previously looked at the connection between vitamin C and bone development, but they were unsure whether or not it would help increase bone density.

    But in a study which appears in the January issue of the Journal of Bone and Mineral Research, California researchers have found that this common vitamin may, indeed, boost bone mineral density. California researchers looked at almost 1,000 postmenopausal women, of whom nearly a third regularly supplemented with vitamin C. The women took between 70 and 5,000 mg/d. Around half of the women took 500 mg, and a quarter of them 1,000 mg, on a daily basis. The National Institutes of Health currently recommends 100-200 mg/d for healthy nonsmokers.

    The researchers measured bone density in four different areas of the body and found that the women who were taking vitamin C had bone mineral density levels that were approximately 3% higher than the others. The women who supplemented with vitamin C were also more likely to be using estrogen, and taking calcium and multivitamin supplements. Combining estrogen, calcium, and vitamin C appeared to produce the highest bone density in all four body sites.

    "An individual who is at risk needs to do preventive strategies," says study author Diane L. Schneider, MD, an associate professor of medicine at the University of California, San Diego. "A significant difference was seen with people taking vitamin C alone, at the hip."

    More than half of the women had been taking vitamin C supplements for over 10 years, but the length of time that vitamin C was used did not seem to affect bone density levels. However, they found that dosage made a difference. Women who took 1000mg or more had the highest levels of bone mineral density.

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