<p><b>Vitamin D will save smokers' lungs</b></p> <p>Deficit of vitamin D is result of lung function impairment and fast long term decrease of this function among smokers. According to opinion of scientists the reason of this is that vitamin D has protective effect against smoking influence on lungs, writes Medical Xpress.</p> <p>"We have examined connection between vitamin D deficit, smoking, lung function and speed of its' reduction during 20 years among 626 adult white-skin patients who participated in Normative Aging Study project. We have determined that enough level of vitamin D (deficit is determined at level less than 20 ng/ml) has protective effect and influences favorably on smokers' lungs", - comments works' manager Nancy Lange, employee of Channing laboratory of Brigham and Women's Hospital in Boston.</p> <p>During research level of vitamin D was estimates among volunteers three time in period from 1984-2003, lung function was researched with the help of spirometry (functional lung research that includes measuring of volume indexes of external respiration with the help of spirometry-device). People under test with vitamin D shortage volume of expiration for one second was 12 ml less as compared to those who haven't experienced vitamin deficit (volume of expiration was 6.5 ml less).</p> <p>"Results of our research show that vitamin D may weaken harmful influence of smoking on lung function. This effect may be connected with anti-inflammatory and anti-oxidant vitamin features", - says N. Lange. According to her words if conclusions will be confirmed in further works, they will have big importance for public health. In the nearest time she plans to find out if vitamin D influences positively lungs of polluted air victims.</p> <p>"In spite of fascinating research results, danger of smoking for health exceeds vitamin D healthy influence on lungs function. First of all smokers should be well-informed about consequences of smoking for health, they should be helped to get rid of this vicious habit", - marks Alexander White, chairman of American Thoracic Society.</p> <p>Research results were published in American Journal of Respiratory and Critical Care Medicine magazines.</p>