A new study published in the American Thoracic Society’s American Journal of Respiratory and Critical Care Medicine shows that vitamin D deficiency can alter the structure and function of lungs in young mice. This is the first study that provides direct evidence for a link between vitamin D deficiencies, which were previously linked to asthma and deficits in lung function and altered lung structure. These functional and structural abnormalities provide a mechanism explaining the link between vitamin D deficiency and obstructive lung disease. To read a news article on this study click here, to read the report click here.