First of all, we should realize the benefits of quitting smoking: the benefits of quitting smoking to the heart, blood pressure and blood system will only show up in one day. After quitting smoking 1 year, the excess risk of coronary heart disease is reduced by half compared with that of continuous smokers. After quitting smoking for 5 years-15 years, the risk of stroke dropped to the level of never smokers.

After quitting smoking 10 years, the risk of lung cancer is reduced by half compared with those who continue to smoke. The risk of oral cancer, laryngeal cancer, esophageal cancer, bladder cancer, renal cancer and pancreatic cancer is reduced, and the risk of gastric ulcer is reduced. After quitting smoking 15 years, the risk of coronary heart disease is similar to that of never smokers. The overall risk of death has returned to the level of never-smokers.

Therefore, it is never too late to quit smoking, and it is best to quit smoking before your health is seriously damaged. People who smoke for too long are not easy to quit unless they want to, and they should do it step by step. It's better to have a substitute, so that he can eat it when he wants to smoke, which will have some effect.