If Mr. Fan gives up smoking now, what will happen to his health?

When you quit smoking, there will be some changes in your body, such as about 8 hours: the level of carbon monoxide in your body tends to be normal, and the level of blood oxygen in your body tends to be normal. About 48 hours: the blood circulation of hands and feet is improved, and the ability of smell and taste is obviously improved. About 72 hours: Breathing is easier and vital capacity begins to increase. 1.5~2 weeks: pulmonary function improved by about 30%. 1~9 months: cough, nasal congestion, fatigue, dyspnea are relieved, lung cilia are regenerated, mucus control ability is enhanced, lungs are clean, infection is reduced, and overall physical fitness level is improved. Five years later: the risk of cancer will be greatly reduced, and the risk of heart disease will be significantly reduced. 10 years later, the probability of lung cancer can be reduced to be close to that of people who never smoke, precancerous cells will be replaced, and the probability of other smoking-related cancers will also be reduced.