What are the main factors affecting lung health?

1. Working environment. Living habits 3. Heredity. Many lung diseases are caused by work, such as miners' pneumoconiosis, teachers' pneumoconiosis and toxic substances in chemical plants. Smoking, staying up late, drinking and other living habits. Lack of exercise at ordinary times, serious infection when catching a cold and so on. Inheritance is also very common. Both parents and grandparents have lung cancer, and so do many descendants. There is asthma, and future generations also have asthma and so on.