Lung cancer is currently the number one cancer killer worldwide, with more deaths from lung cancer each year than from breast, bowel and prostate cancers combined. As a result, medical doctors around the world are heavily involved in lung cancer research and investment. Discovery: 70% of patients are already in advanced stage when diagnosed Lung cancer is insidious and has no typical symptoms in the early stage. 70% of patients are already in advanced stage when the tumor is discovered, which greatly affects the treatment effect. If diagnosed at early stage, some patients can survive for more than 5 years, and some even have the hope of cure. Unfortunately, however, most patients are diagnosed with lung cancer at an advanced stage, meaning that the cancer cells have spread to other parts of the body. Less than 5% of patients who receive treatment only at this stage will live beyond 5 years. There is no screening method that is both economical and easy to promote to detect lung cancer early. Nowadays, many organizations organize an annual physical examination and everyone has a chest X-ray, however, it has been confirmed that chest X-ray alone does not help much in the early detection of lung cancer. The United States and Japan released an important research result last year respectively – lung cancer screening with low-dose spiral CT for high-risk people can detect lung cancer early. Therefore, “we recommend lung cancer high-risk people over 40 years old, long-time smokers and those with family history of tumor to have low-dose spiral CT once a year. spiral CT has high resolution and crystals of four or five millimeters can be detected.” FINDING: Same lung cancer, especially difficult to treat in smokers Since 1996, the incidence of lung cancer in men in the United States has declined significantly and mortality rates have been controlled, not entirely due to the effectiveness of treatment, but to a large extent due to tobacco control. There is a very strong relationship between lung cancer and smoking. In most countries around the world, 90 percent of lung cancers are caused by smoking, own smoking, secondhand smoke and thirdhand smoke. “And clinical data also show that lung cancer in smokers is different from lung cancer in non-smokers. Lung cancer in smokers is very difficult to treat, and the treatment effect is not even good, and lung cancer in non-smokers has a better prognosis. Therefore, controlling smoking is the most crucial factor to prevent and control lung cancer. However, to this day, the number of smokers in China is still huge and poorly controlled. The proportion of young people in China who smoke is still rising, and the proportion of the female population who smoke is also rising. In recent years, the number of female lung cancer patients in China has been increasing year by year, and second-hand smoke, air pollution and indoor pollution are all factors that lead to lung cancer in women. In addition, as a housewife, women are often exposed to grease and smoke, which also increases the risk of lung cancer. Note: Coughing for two weeks should be taken seriously Let me tell you a story first: a 33-year-old young man, who graduated from a medical university, developed a cough during the New Year this year and didn’t feel anything about it, so he got himself some cough medicine and anti-inflammatory drugs to eat. After half a year, he couldn’t stop coughing, so he went to the hospital to take a film, and the result was that he had advanced lung cancer. A cough that lasts for a while should be taken seriously. “Generally speaking, whether you have a persistent dry cough or a cough with phlegm, the type of cough does not matter. In the case of coughing for two weeks and the use of antibiotics does not work, it is recommended to go to the hospital respiratory department for detailed examination as soon as possible.”