03-30-2007, 07:55 AM | #1 (permalink) |
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Rep Power: 35 | Sunshine & Asthma http://www.theglobeandmail.com/servl...lth/columnists Sunshine and asthma Pregnant women who get ample amounts of vitamin D may be protecting their unborn children from developing asthma later in life, a U.S. study suggests. Researchers at Massachusetts General Hospital in Boston used questionnaires to assess vitamin D levels of women when they were pregnant. They then matched this data with the children who were showing early signs of asthma -- recurrent wheeze -- by the age of 3. "The higher the maternal level of vitamin D, the lower the child's risk [of asthma]," said Carlos Camargo, lead researcher of the study published in the American Journal of Clinical Nutrition. Vitamin D is obtained from some foods, including oily fish such as salmon. It is also produced in the skin as a result of exposure to sunlight. But, during winter months, the sun's rays just aren't strong enough to trigger vitamin D production. "I think adults in northern latitudes should take vitamin D supplements," Dr. Camargo said in an e-mail. "The optimal dose is not yet clear, but a recommendation of 800 to 1,000 International Units a day is safe and is known to increase blood levels of vitamin D during these winter months." |
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