Do you know the harm of smoking to the lungs?

My father has been smoking for several years. Everyone in the family advised him to quit smoking, but he always gave up halfway. We all know that smoking is harmful to our health, but we still can't help smoking. My boyfriend also smokes. I heard from my colleagues that smoking can easily lead to lung cancer. I want to know what kind of harm smoking can cause to the lungs?

The harm of smoking to the lungs: Smoking can cause lung cancer. 90% of total mortality is caused by smoking. A person who smokes ten cigarettes a day has ten times the risk of developing the disease as a non-smoker. Damaged cells cannot return to normal. The early stages of the disease may go undetected until the cancerous cells spread to the blood vessels and other organs. (So ​​far, lung cancer is the type of cancer that causes the most deaths in humans, and it is almost impossible to detect lung cancer early. The survival rate of patients diagnosed with lung cancer is less than 5% after 3 years, and almost zero after 5 years. Doctors recommend that smokers should have a chest X-ray every 3 to 6 months. If they have symptoms such as dry cough, blood in sputum, chest pain and fever, they must not take it lightly and should go to the hospital immediately for a sputum cytology test. Only in this way can the possibility of early detection of lung cancer be increased.) Smoking can also cause emphysema. The toxic substances accumulated in the bronchi of the lungs will hinder the normal exhalation of the air inhaled by the human body, causing the lung cells to swell or burst, resulting in difficulty breathing for the patient. Patients with severe emphysema are in great pain. In order to breathe in enough oxygen, they have to stand upright and breathe at a high frequency. Even on flat ground, they have to walk slowly. Some more seriously ill patients have to rely on oxygen bags to sustain their lives. They must concentrate all their efforts on doing a simple action - breathing - for the rest of their lives.

Smoking is the main risk factor for chronic obstructive bronchitis. Because smoking can cause the cilia of bronchial epithelial cells to become shorter and irregular, as well as movement disorders, reducing local resistance and making it easier to get infected. Some doctors believe that lung cancer should be considered a very merciful disease compared to emphysema because it causes pain for a much shorter period of time.

Smoking is harmful to health. This is knowledge that every smoker knows, but they just can't quit. In fact, quitting smoking depends on the smoker's perseverance, which is also quite difficult to quit. Also, secondhand smoke is more harmful nowadays. If you have children at home, it is best to quit smoking, which will be much better for your children's growth. Because there are more and more diseases caused by smoking, smoking is not recommended.