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Infectious Disease
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Increase Vitamin D to Lower Colds and Flu
Recently, a number of studies have suggested a role for vitamin D in innate immunity, including the prevention of respiratory tract infections (RTIs). Adit Ginde, from the University of Colorado (USA), and colleagues analyzed data from the Third National Health and Nutrition Examination Survey, which involved 18,883 adults and adolescents between 1988 and 1994. The team found that people with the lowest average levels of Vitamin D in the blood were about 40% more likely to have a recent RTI (as compared to those with the highest Vitamin D blood levels). Further, low Vitamin D levels in people with asthma were associate d with a five-time greater risk of RTI; and among COPD patients, RTIs were twice as common among those with Vitamin D deficiency. The researchers suggest that Vitamin D may have a vital role in the production of cathelicidins, a type of protein that is key to immunity. [Ginde AA, Mansbach JM, Camargo CA Jr. “Association between serum 25-hydroxyvitamin d level and upper respiratory tract infection in the third national health and nutrition examination survey,” Arch Intern Med. 2009 Feb 23;169(4):384-90.]
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Important: The statements contained above and in hyperlinked documents have not been evaluated by the Food and Drug Administration. These statements are for educational purposes only, and are not intended to diagnose, treat, cure, or prevent any disease.
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