Can advanced lung cancer infect humans?

Lung cancer in the late stage is not contagious. Lung cancer is a non-communicable disease. Its occurrence is related to multiple factors such as genetics, environment, and physiology. It will not be transmitted to others through air, contact, or body fluids.

1. Genetic factors

The occurrence of lung cancer may be related to genetic gene mutations. The high incidence of lung cancer in some families may be related to genetic susceptibility. For example, gene mutations such as BRCA1 and BRCA2 may increase the risk of lung cancer. For people with a family history, regular low-dose CT screening is recommended to detect lesions early.

2. Environmental factors

Long-term exposure to harmful environments is an important cause of lung cancer. Smoking is the main external factor, and the carcinogens in tobacco can damage lung cells. Air pollution and occupational exposure such as asbestos and arsenic can also increase the risk of disease. Reducing smoking, improving air quality, and wearing protective equipment are effective preventive measures.

3. Physiological factors

Physiological changes such as aging and decreased immunity may increase the risk of lung cancer. People with chronic lung diseases such as chronic obstructive pulmonary disease are also more likely to develop lung cancer. Maintaining a healthy lifestyle, such as a balanced diet and moderate exercise, can help enhance immunity.

4. Trauma and pathological factors

Trauma or long-term inflammation in the lungs may induce abnormal cell proliferation, which may eventually develop into lung cancer. For example, patients with tuberculosis have a higher risk of developing lung cancer. For people with a history of lung disease, regular follow-up visits should be conducted to monitor changes in their condition.

5. Treatment methods

The treatment of advanced lung cancer is mainly aimed at relieving symptoms and prolonging survival. Drug treatment includes targeted therapy such as gefitinib, erlotinib, immunotherapy such as PD-1 inhibitors and chemotherapy such as cisplatin and carboplatin. Surgical treatment is suitable for patients with locally advanced disease and may include lobectomy or pneumonectomy. Radiotherapy can be used to relieve pain and shrink tumors. In terms of diet, it is recommended to consume more foods rich in antioxidants, such as blueberries and carrots; in terms of exercise, moderate walking or yoga can help improve respiratory function.

Although advanced lung cancer cannot be cured, comprehensive treatment can significantly improve the quality of life. Patients and their families should actively cooperate with doctors in treatment, pay attention to psychological support, and maintain an optimistic attitude.