Does quitting smoking or relapsing after quitting increase the chance of getting lung cancer?

Quitting smoking or relapse after quitting may increase the risk of lung cancer. Smoking is one of the main risk factors for lung cancer.

1. No increase

1. Non-smokers: For people who never smoke, even occasional exposure to secondhand smoke will not cause much impact on the body, and therefore will not increase the risk of lung cancer.

2. Recent smokers: If a long-time nonsmoker has only recently started smoking, they may be at a higher risk of lung cancer, but this risk is generally low and can be reduced by stopping smoking.

Second, it will increase

1. Frequent smokers: For those who smoke more than 20 cigarettes a day, their risk of lung cancer increases significantly. This is because the harmful substances in tobacco can damage lung tissue and promote abnormal cell proliferation, thereby increasing the possibility of lung cancer.

2. Former smokers: Although they have quit smoking for many years, the risk of lung cancer for these people will increase because the harmful substances in tobacco still exist in the body.

3. Long-term smokers: For those who have smoked for a long time, such as those over 40 years old, their risk of lung cancer will increase accordingly.

Quitting smoking or relapse after quitting may increase the risk of lung cancer. In order to prevent the occurrence of lung cancer and reduce the risk of disease, it is recommended that people avoid smoking or using other tobacco products as much as possible.