A new study reinforces the role that Vitamin D plays in preventing colds and other respiratory tract infections.
Researchers using data from 18,883 participants in the Third National Health and Nutrition Examination Survey found that Vitamin D could boost immunity to colds, even after adjusting for demographic and clinical factors such as season, body mass index, and smoking history. The study, published in the journal Archives of Internal Medicine reinforces the importance of Vitamin D in avoiding upper respiratory tract infections.
Vitamin D is produced by the body when exposed to direct sunlight. It is crucial for people with limited sun exposure (such as during winter months) to include Vitamin D in their diet. Good sources of Vitamin D include fatty fish, fish liver oils, and eggs.
SOURCE; Association Between Serum 25-Hydroxyvitamin D Level and Upper Respiratory Tract Infection in the Third National Health and Nutrition Examination Survey, Ginde, et al, Arch Intern Med. 2009;169(4):384-390.