Can lung cancer be contagious? A summary of some common knowledge about lung cancer

Nowadays, environmental pollution is very serious, and everyone's lung health has suffered a lot. As a result, the number of people suffering from lung cancer is increasing. Many people are very curious about whether lung cancer can be contagious. If you want to know the answer, then continue reading.

Is lung cancer contagious? Experts say that the reason why people think lung cancer is contagious is because they do not distinguish between lung disease and lung cancer. Lung cancer is a type of lung disease, but it is not contagious. In simple terms, contagion is when a disease is transmitted from one person to another through some means. Contagion must meet three conditions: the source of infection, the route of transmission, and the susceptible population. Clinical data prove that cancer patients themselves are not the source of infection.

The contagious lung diseases that people know about are mostly "pulmonary tuberculosis". Patients with pulmonary tuberculosis are called open pulmonary tuberculosis when their sputum is positive for bacteria. They are contagious, so patients with coughs, sputum, and blood in their sputum should pay attention to disease prevention. Pulmonary tuberculosis is a disease transmitted through the respiratory tract, but lung cancer is different from pulmonary tuberculosis. Lung cancer is a malignant tumor that loses its normal cell morphology and dynamics due to the abnormal proliferation of local cells under the action of various different carcinogenic factors. Cancer cells discharged through sputum rapidly degenerate and necrotize due to the evaporation of sputum water and other reasons. Even fresh sputum requires various nutrients and specific conditions to make cancer cells grow and reproduce in vitro. Scientists often have to go through a lot of hardships to succeed in cultivating a living cancer cell, so cancer is not contagious.

As for whether lung cancer is contagious, we should also distinguish between contagious and hereditary issues. Lung cancer is hereditary but not contagious. However, we do not need to worry. Lung cancer only has a certain genetic tendency. If it is to develop, it will only occur under the influence of external factors.