Vitamin D supplements can cut the rate of potentially fatal, acute inflammation of the airways by as much as 45 percent in people with chronic obstructive pulmonary disease (COPD) and vitamin D deficiency, say researchers at Queen Mary University of London. These serious “lung attacks” are often triggered by upper respiratory infections, such as the common cold.
Vitamin D, called the “sunshine vitamin,” is well known for promoting bone health, but research suggests it also may protect against colds and flu, help prevent asthma attacks, and have additional health benefits. The British researchers analyzed data on 469 people from three European clinical trials. Among those in the trials who were not vitamin D deficient, supplements, administered in doses ranging from 30 micrograms (mcg) daily to 2,500 mcg monthly, didn’t reduce the number of COPD exacerbations or raise side-effect risk.
According to the USDA (United States Department of Agriculture), the recommended daily allowance of vitamin D for healthy people ranges from 400 IU (10 mcg) to 800 IU (20 mcg), depending on your age. Food sources of this fat-soluble vitamin are limited and include fatty fish (salmon, tuna, mackerel), fish liver oils, and egg yolks.
Sourced from: Thorax