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The People’s Pharmacy /By Joe and Teresa Graedon

Low vitamin D raises concern


Updated: August 20, 2009, 8:53 AM /
Parents can’t win. Dermatologists tell them to keep their kids out of the sun or slather them with sunscreen to prevent skin cancer later in life. But now scientists say that an astonishing number of children are deficient in vitamin D, in part because they are not getting enough sunshine on their skin.
A new study in Pediatrics (online, Aug. 3, 2009) shows that 9 percent of the 6,275 children tested had vitaminDdeficiency. That translates to more than 7 million American youngsters. Equally alarming, the researchers project that roughly 50 million children have inadequate levels of vitamin D.
The consequences could be devastating. Children in this sample who had low vitaminDlevels had higher blood pressure and LDL cholesterol. This could set them up for heart disease later in life. In addition, low vitaminDis linked to weak bones, diabetes, cancer and other diseases.
Children used to play outside in the summer. These days they are more likely to spend time in air-conditioned comfort in front of a computer. If they do go outside to swim or play a sport, they probably wear a high SPF sunscreen that blocks vitaminDformation.
A multivitamin is unlikely to supply all the vitaminDa growing child would get from sun exposure. In fact, the recommended daily intake for children was recently doubled from 200 International Units to 400 IU. The study in the journal Pediatrics showed that only 4 percent of the children were taking supplements with that amount of vitamin D.
Kids aren’t the only ones who are low in vitaminDthese days. There is a growing realization that many adults also are deficient in this crucial nutrient. Research suggests that up to half the population have low vitaminDlevels (Journal of the American College of Cardiology, Dec. 9, 2008).
This epidemic of vitamin deficiency could be contributing to a host of serious health problems, from diabetes and heart disease to cancer and osteoporosis.
It also may be contributing to arthritis and muscle pain, especially for people who are taking statintype cholesterol-lowering medicine (Clinical Endocrinology, July 2009). Researchers suspect that many of the people who are complaining about muscle and joint pain while taking drugs like Crestor, Lipitor or simvastatin (Zocor) might be low in vitamin D.
Another reason to be concerned about low levels of vitaminDis the coming flu season. Public health officials are worried about the potential pandemic of H1N1 influenza. VitaminDdeficiency appears to make many people more susceptible to the flu.
People who get 10 to 15 minutes of sun exposure at one time can convert that into at least 10,000 International Units of vitamin D. In the winter, a supplement of 2,000 IU daily will provide most people with adequate amounts of vitamin D.
For more information about the dangers of vitaminDdeficiency and how to treat it, we offer a one-hour podcast of our radio interview with vitaminDexperts Drs. Michael Holick and James Dowd. Show No. 672 is available for $2.99 atwww.peoplespharmacy.com. Perhaps it’s time for parents to take their kids outside to play. Not only will the children benefit, but the parents may reap health dividends themselves.

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