MyHealth-Store Posting Page
Friday, October 15, 2010
Researchers in Japan recently studied the effect of vitamin D3 supplements (1,200 IU per day from December through March) on the incidence of seasonal influenza A in school children.
Influenza A infection occurred in 18.6% of children in a placebo group versus 10.8% of children who received the supplement – a 42% reduction in risk among those taking the supplement.
The reduction was more prominent among children who had not been taking other vitamin D supplements.
Influenza infection was not reduced among a subgroup of asthmatic children but those who became infected were significantly less likely to have an asthmatic attack if they received vitamin D than if they had not.
Supplementation did not affect the incidence of influenza B (which is less common than influenza A and is not seasonal).14

A review of medical studies published from 1950 to 2009 that looked, among other variables, at vitamin D intake and asthma suggested that vitamin D deficiency may be linked to airway inflammation, decreased lung function and poor asthma control.
The researchers conducting the review hypothesized that vitamin D supplementation may lead to improved asthma control, although this cannot be established as many of the studies were not specifically designed to test the effects of vitamin D supplementation on patients with asthma.15

by: MyHealth-Store