A new study shows that smoking even a few cigarettes a day is harmful to lungs and that former smokers continue to lose lung function at a faster rate than never-smokers for decades after quitting.
Ex-smokers, light smokers not exempt from lung damage
A new study shows that smoking even a few cigarettes a day is harmful to lungs and that former smokers continue to lose lung function at a faster rate than never-smokers for decades after quitting.