Is lung cancer contagious or hereditary? You should know these common knowledge about lung cancer

Will lung cancer patients infect their families? Lung cancer is a very harmful disease, because the morbidity and mortality of the disease are at the top of the list of major tumors. People with lung cancer may think about this question: Is lung cancer contagious in the late stage? Let's take a look at it together. Will lung cancer patients infect their families?

The chance of lung cancer being transmitted is very low. It is not a contagious disease, but it is not impossible to be transmitted. Lung cancer is conditional. First of all, the source of infection, susceptible population, and transmission route are all indispensable. Otherwise, it will not be transmitted. And you should know that there are many differences between lung cancer and tuberculosis. Although both are problems with the lungs, lung cancer is not contagious in most cases. 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.

In addition, lung cancer patients must pay attention to the three earlys, that is, early detection, early diagnosis, and early treatment, so as not to miss the best treatment time. Many people take surgical treatment, and early surgical treatment is often effective. The earlier the treatment, the lower the chance of recurrence.

However, lung cancer is a hereditary disease. People with a family history are more likely to get lung cancer than normal people. Although lung cancer seems to cluster in families, there is no evidence to date that there are specific susceptibility genes for lung cancer. More and more studies support that lung cancer is caused by the interaction between genes and the environment. Genetic variations in carcinogen metabolism, DNA repair, and cell proliferation and apoptosis control genes may all be important genetic susceptibility factors for smoking-related lung cancer. Therefore, the key measure to prevent and reduce the occurrence of lung cancer is to quit smoking.

But we need to understand that a heritable disease does not necessarily mean that it will be inherited. Infection is an infectious disease caused by the spread of microorganisms including bacteria and viruses between people, such as tuberculosis and hepatitis. Heredity is due to blood ties, causing many people in a family to suffer from the same disease. If one of the parents has a certain type of cancer, their children are more likely to suffer from the same type of cancer, which means that cancer patients often have a clear family history of tumors. Survey results show that the incidence of cancer patients is higher in blood-related than in non-blood-related patients, higher in close relatives than in distant relatives, and no significant difference between paternal and maternal relatives, indicating that the incidence of cancer is related to genetic factors.