People who quit smoking have a lower risk of lung cancer than if they had continued to smoke, but their risk is higher than the risk for people. What are the risks of tobacco smoke to nonsmokers. If you've recently quit smoking and you're concerned about what the years of. About 10 years after quitting, an ex-smoker's risk of dying from lung cancer is 30 to 50. However, the lung cancer risk of a person who has never smoked is typically much lower than the lowest percentages calculated by this tool. Giving up smoking is highly effective in preventing death from lung cancer and can reduce the risk of dying from the disease by up to 70 percent. Risk of cancer of the mouth, throat, esophagus, and bladder are cut in half.
