Although the 2020 data report shows that the incidence of breast cancer in the world has exceeded that of lung cancer, lung cancer is still the most high-incidence malignancy in China, with nearly 800,000 newly diagnosed patients each year.
Not only that, because the early symptoms of lung cancer are not typical and difficult to find, most patients have entered the middle and advanced stages of cancer when they are diagnosed.
Therefore, lung cancer is not only the most high-incidence malignant tumor in the mainland, but also the type of death.
Many people have a very lucky mentality about cancer, in their view, getting cancer is entirely a matter of probability and luck.
But in fact, with the continuous advancement of medical technology in recent years, many carcinogenic factors have been discovered.
Cancer is never about luck or not, but about whether you have various risk factors related to cancer.
Similarly, lung cancer to find patients, but also not for no reason, as far as the current clinical data is concerned, it is mainly related to the following factors:
1. Smoking
At present, it is clinically believed that smoking is the most important risk factor for lung cancer, and because of this, cigarettes are included in a class of carcinogens.
Studies have shown that a cigarette will produce more than 3,000 kinds of chemicals in the process of burning, including a large number of carcinogens, including nitrosamines with strong carcinogenic activity, polycyclic aromatic hydrocarbon compounds and so on.
A person who smokes for a long time has a 10-20 times more likely to develop lung cancer than non-smokers, and the younger the age of the initial smoker, the greater the chance of future cancer.
Not only that, second-hand smoke and third-hand smoke produced when cigarettes are burned may also cause cancer. It can be said that one person smokes, and the whole family suffers.
2. Occupation and environment
Cancer caused by occupational factors is also called occupational cancer in the clinic, and lung cancer is the most important type of occupational cancer.
In mainland China, nearly 10% of lung cancer patients develop the disease because of the long-term environment and occupational exposure history.
For example, the initial long-term exposure to kitchen fumes, long-term exposure to aluminum products by-products, vinyl chloride, asbestos, coke ovens, ionizing radiation, industrial exhaust gases, etc., will increase the incidence of lung cancer;
In addition, relevant research and investigation show that the incidence of lung cancer in the mainland has continued to grow in recent years, which is also closely related to the rise of industry and the development of transportation.
Because oil, coal, internal combustion engines and other combustion processes produce benzopyrene-containing carcinogenic hydrocarbons, these harmful substances can cause atmospheric pollution.
Air pollution and smoking may have a mutually reinforcing and synergistic effect on lung cancer.
3. Lung diseases
Among the various factors of cancer, one is related to chronic diseases, because chronic diseases can cause repeated damage to local tissues, and chronic diseases will further weaken the patient's resistance, which in turn increases the possibility of cancer.
Relevant studies have shown that patients with long-term tuberculosis and bronchiectasis may lead to squamous epithelial metaplasia in the process of chronic infection of the bronchial epithelium, and eventually become cancerous.
In addition to the above three factors, studies have found that family aggregation and genetic susceptibility also play an important role in the incidence of lung cancer.
It can be said that lung cancer is the product of multi-factor interaction. Because genetics and age growth are artificially uncontrollable, in order to reduce the risk of future lung cancer, we can only adjust from life, timely smoking cessation, attention to work protection, regular physical examination is very necessary.