Congratulations!
If you've kicked the habit, you are to be congratulated and admired. Breaking an addiction to the nicotine in tobacco isn't easy. With each smoke-free year that passes, you lower your odds for heart disease, serious breathing problems and cancers of the lungs, mouth, throat, esophagus, bladder and possibly the pancreas, too. But you may not be in the clear yet. Your heart and lungs are still at a higher risk for disease than those of a nonsmoker for up to 20 years after you quit.