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Extra Vitamin D May Ease Crohn's Symptoms, Study Finds

Improvements reported in muscle strength, fatigue and quality of life

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Raftery now is testing vitamin D in a larger, year-long study of 130 Crohn's patients.

The study results echo those of other researchers, including John White, professor of physiology at McGill University, Montreal. He said the research findings "show collectively that vitamin D acts in the intestine to stimulate the innate immune system to defend against pathogenic bacteria, and to enhance the barrier function of the intestinal epithelium [the lining of the intestine]."

Other researchers, including Raftery, have also shown vitamin D can help improve muscle strength, he said.

Vitamin D is getting a lot of attention in inflammatory bowel disease treatments, said Dr. Neera Gupta, co-chair of the Crohn's & Colitis Foundation of America's pediatric affairs committee.

More study is needed to determine the benefits of maintaining vitamin D levels higher than currently recommended, she said.

Gupta cautioned those with Crohn's not to self-dose with vitamin D. "Discuss your vitamin D status with your primary gastroenterologist to determine whether or not vitamin D supplementation is indicated in your particular situation," she said.

White said supplements are inexpensive and safer than too much sun exposure. A daily intake of 2,000 IUs is considered safe, he said. The safe upper limit for adults is 4,000 IUs, according to the NIH.

The data and conclusions of research presented at medical meetings should be viewed as preliminary until published in a peer-reviewed journal.

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