http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. 'Healthy' smokers experience changes in the gene expression of their lungs similar to that suffered by smokers who have developed Chronic Obstructive Pulmonary Disease (COPD). This is the conclusion of a new study, led by Catalan researchers, which confirms the crucial role that smoking plays in causing these alterations. http://medicalxpress.com/news/2011-05-smokers-gene-patients-copd.html Diseases, Conditions, Syndromes Mon, 09 May 2011 10:27:05 EST news224155602