I've actually answered a similar question in a headline before, but seeing what was attached to the question, I felt the need to reiterate it again.

First of all, it is clear that cancer itself is not contagious, not just lung cancer, but any cancer.

1. Cancer cells are produced by the genetic mutation of their own normal cells, which are related to their ownThe cells are homologous and are not foreign bacteria or microbes;

2. Cancer cells are generated in the own body and can only grow in the own body, and they will be declared dead after detaching from the mother body, and will not be parasitized in another body. In other words, even if the cancer cells in other people's bodies are inoculated into another person's body, they will not survive, and the human body's immune system will automatically recognize the "foreign species" and kill them. The body's immune system will automatically recognize the "foreign species" and kill it.

3. The so-called infectious diseases, that is to say, contagious, refer to diseases in which foreign microorganisms (such as bacteria or viruses) invade the human body and cause it to develop, and which can be transmitted from person to person or from animal to person.

4. Cancer cells are neither bacteria nor other microorganisms, but mutated cells of the human body, not to mention that they do not interact and spread among different individuals.

Although cancer is not contagious, the causes of certain cancers are.

Cancer occurs when various undesirable factors act on the human body for a long period of time, thus leading to the mutation of human cells, and among these undesirable factors, bacteria or viruses are important components. For example, Helicobacter pylori and stomach cancer, Hepatitis B virus and liver cancer, human papilloma virus and cervical cancer,EBV and lymphoma and nasopharyngeal carcinoma,HIV and Kaposi's sarcoma and lymphoma,Schistosoma and bladder canceretc.

In summary, it makes sense to prevent these infections that have the potential to cause cancer without worrying about the cancer patients themselves, and contact with cancer patients will not have anything to do with the development of cancer.

Many cancer patients and their families lack a correct understanding of cancer and are afraid of being infected with cancer. In fact, cancer is not contagious, but it may be associated with infectious diseases during its occurrence and development. We can say that some cancers are caused by infectious diseases, but we cannot say that cancer is contagious.

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Contagion is the spread of a disease from one person to another by some means. Infection requires three conditions: a source of infection, a means of transmission and a susceptible population.

Cancer patients themselves are not a source of infection. Although there is a strong aggregation of cancer occurrence in the family, it is not caused by contagion, which is mainly related to the patient's family heredity and common cancer-causing factors, such as smoking and passive smoking, excessive alcohol consumption, eating high-fat soft food, pickled food, moldy food, fried food, etc., home decoration, kitchen fumes, ultraviolet radiation and other viral infections, and the family members have a susceptibility to this kind of cancer and a susceptibility tendency to develop it, which will lead to the occurrence of family cancer.

Key points of cancer prevention and treatment: Develop good living habits, quit smoking and limit alcohol. Don't eat too much salty and spicy food, and don't eat food that is too hot, too cold, expired or spoiled; those who are old and weak or have certain disease genes should eat some anti-cancer food and alkaline food with high alkaline content as appropriate.

Strengthen physical exercise, enhance physical fitness, more exercise in the sun, more sweating can be the body's acidic substances with sweat out of the body, to avoid the formation of acidic body.

Regular proactive cancer checkups, everyone has oncogene cells in their body, but not necessarily everyone will get cancer. However, when the immune function is low, the number of normal cells will decrease and the number of cancer cells will increase. Regular checkups can detect the condition in time for early treatment. People with a family history of tumors are advised to check their bodies twice a year; healthy people are advised to check once a year.

Is cancer contagious or not? This has to be answered from two aspects. Theoretically cancer cells are contagious, and if they were not contagious the laboratory would not be able to culture them. However, certain conditions are needed, as long as the conditions are present, it can be infectious: 1, constant temperature of 37°C; 2, sterility, if there are bacteria, the cultured cancer cells will be eaten by the bacteria; 3, glucose; 4, a small amount of serum can be used.

But in actuality cancer cells are not contagious, for example, if they are eaten in the stomach they are digested as food.

If a puncture on a cancerous tumor brings out the cancer cells and punctures them into another person's flesh, and your body automatically completes the decontamination, conforms to a constant temperature of 37 degrees, and also has glucose, and also serum, then it is possible to access the cancer cells in your body successfully. However, it is very likely that your body does not have the environment for the cancer cells to survive, so the cancer cells may only survive for a few days and then die. If you have the environment for the cancer cells to survive, the cancer cells can survive. If you have the conditions for cancer cells to survive, you can mutate cancer cells without accessing them. If you don't have the conditions for the cancer cell to survive, your DNA will not provide blood vessels for the cancer cell to grow, and this cancer cell will not be able to develop even if it survives.

　　In recent years, the incidence of cancer caused by various factors has become increasingly high. Recently, many netizens have raised the sensational question: Is cancer or tumor contagious? It is because they have concluded that in the same family, although the family members are not related to each other by blood, many of them died because of the same kind of malignant tumor. In a family, there are often several consecutive siblings because of liver cancer and passed away ...... tumor factors in the development of viral infections caused by viruses will be contagious, then the tumor or cancer should also be contagious! Raising such a challenge and basis does not serve as a reliable basis for cancer or tumors to be contagious. There is no complete scientific research or epidemiological study evidence on whether cancer or tumor is contagious.

　　For the confusion of many users, we offer the following explanation:

　　1. Common wrong dietary structure, living habits; or long-term exposure to the same risk factors without change can lead to different members of the same family suffering from the same type of cancer. It is called "husband and wife cancer", for example, the man suffers from penile cancer and the woman suffers from cervical cancer; the man suffers from colon cancer and the woman suffers from breast cancer; or the man and woman suffer from liver cancer at the same time. In addition, the development of stomach cancer and colon cancer also has a certain tendency of family aggregation, which is not caused by infection and long-term common exposure to cancer-causing risk factors.

　　2. Some cancers are related to viral infections, for example, female cervical cancer and human papilloma virus infection has a certain relationship, primary liver cancer in some patients because of hepatitis B virus infection and get sick; these cancers are due to specific infectious diseases, but we can't think that: Cancer or tumors are contagious!

　　3. Some cancers run in families. For example, breast cancer is three times more likely to occur in a woman whose mother or sister is a breast cancer patient. Scientific studies have shown that this phenomenon may be related to cancer-causing genes carried by genetic material in cells.

　　How to prevent cancer from occurring in daily life? First of all, we must have correct living habits and awareness of dietary choices, and stay away from cancer-causing foods, such as pickled foods, barbecued foods, smoked and fried foods, and moldy foods. Secondly, dietary modification is also very critical, appropriate to eat more food with anti-cancer effect, but also appropriate to use some Chinese medicine supplements to improve immunity and prevent cancer. In addition, eat more food rich in vitamin C, carotene, can antioxidant anti-aging, greatly prevent cancer. Once again, keep a relaxed mood, appropriate sports and so on can enhance the body's resistance and prevent the occurrence of tumors and various diseases.

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Cannot. There are two important factors in the occurrence of cancer, one is genetic mutation and the other is immune dysregulation. Of course, there are also other factors that should not be ignored, such as the environment, lifestyle habits, etc..

Speaking of genetic mutation, I think that not long ago there was a media report that "66% of cancers occur because of bad luck". This article immediately caused a sensation, with some people being relieved by it and others panicking, wondering if the God of Luck could favor them not to suffer from cancer. But in fact, this is the layman's misunderstanding of the insiders, or in order to attract attention to the title party. This is because the 66% in the original article in the journal Science, which published this article, refers not to the probability of getting cancer, but to the probability of a genetic mutation. Saying that 66% of genetic mutations are randomly generated due to copying errors is only one factor in genetic mutations, there are also environmental and genetic factors. The most famous example of preventing genetic factors in cancer is Angelina Jolie's initiative to remove both breasts and later her ovaries and fallopian tubes to prevent ovarian cancer because she carried the BRCA gene mutation. Jolie's behavior was brave and slightly radical, but illustrates the uncontrollable nature of cancer gene mutations, especially the random nature of replication errors.

So do we all have to do what Julie did in order to save for a rainy day? In fact, it is not, medicine talks about the three levels of prevention (early detection, early diagnosis, early treatment), and the same is true for cancer prevention.

(a) Do a good job of cancer screening. 2018 Annual Report on Cancer in the United States colorectal cancer mortality rate has continued to decline for 20 consecutive years thanks to screening, especially colonoscopy. I will add gastroenteroscopy to my parents' annual physical examination program, and at present, gastroscopy and colonoscopy are the only accurate tests for screening gastric and intestinal cancers, and for women, regular cervical cancer screening is also a highly specific test, which can achieve early detection, early diagnosis and early treatment.

(ii) Quit smoking and stay away from second-hand, third-hand smoke. 30% of all cancer deaths are tobacco-related, most typically lung cancer. 2018 American Cancer Yearbook shows that lung cancer death rates are declining year after year, and that's closely related to tobacco control policies. I remember I wrote an article on what are the dangers of smoking, and many of my friends in the comments suggested that we should just shut down the tobacco manufacturing companies and everything would be fine, which is indeed a curative suggestion, but while this proposal is still unattainable, all we can do is to mind our own business and stay away from tobacco.

(iii) Changing bad habits.

The first thing is to be mentally healthy: mental illness leads to physical illness. Many people get sick and get cancer because they have too much negative emotions stored up in their bodies and cannot vent them, so they choose to attack inwardly. Maintain a good state of mind, encounter problems in a timely manner to solve, do not reject psychotherapy, all for a better life;

Next is to eat a healthy diet: a balanced diet is the most effective dietary principle. At the same time, reduce the intake of foods that are clear carcinogens, such as barbecue, especially grilled food should not be eaten, Chinese-style salted fish, alcohol, moldy food, processed meats, etc., will increase the risk of cancer. Eating more fruits and vegetables, whole grains, green tea, soy products, and potatoes are all good for cancer prevention.

Finally, we advocate more exercise. The same U.S. big data show that exercise can reduce the incidence of 13 types of cancer, regardless of form, as long as the total amount of exercise up to standard, square dancing can prevent cancer it. So it seems that exercise can not only reduce weight, addictive, maintain a pleasant mood, but also can prevent cancer, there is really no reason not to move up?

Cancer is not contagious, even with a cancer gene is not a 100% lottery, do a good job of cancer screening, quit smoking, develop good habits can be infected to reduce the risk of cancer, why not!

(Wang Fang, Nurse-in-Charge, National Public Nutritionist, National Health Manager, Founder of Good Food Nutrition Workshop, Participant of Wang Xingguo Nutrition Special Training Course 5)

Definitely not, so far, it is safe to say that cancer is not contagious. The so-called contagion is simply the spread of a disease from one person to another through a certain way. There are three conditions for contagion: the source of infection, the means of transmission and the susceptible people, all of which are indispensable. Clinical data prove that cancer patients themselves are not the source of infection. Experts have conducted experiments in which cancer tissues taken from a cancer patient were directly planted on another person and did not survive and grow. Although it is believed that the occurrence of certain cancers is related to certain viruses, such as cervical cancer, nasopharyngeal cancer and leukemia, it has not yet been proved that the infection of certain viruses will definitely lead to a certain kind of cancer. Besides, cancer is not classified as an infectious disease in the world, and patients are not treated with isolation measures like those for infectious diseases. The incidence of cancer among medical and nursing staff of oncology hospitals is not higher than that of the general population. Animal experiments have also proved that cancer-stricken animals and healthy animals are kept together for a long period of time, and after repeated observation and examination, no contagious phenomenon has been seen. Therefore, we are warned that when our family members and friends have cancer, we should not worry about contagion, but should stay with them more often and dedicate ourselves to their warmth and love, which is conducive to the early recovery of the patients' conditions.

Cancer is not contagious, it can be hereditary, but it's not 100%, you just have a higher chance of getting it. If you know your family has this kind of disease, you can prevent it as early as possible. Normally, let go of your mind, be in a good mood, don't sulk when things go wrong, check your body in a year or half a year, and have early treatment for any disease, and you will be fine in general.

Like my family, my grandparents died disease free, my grandfather died not long after a fall in his seventies, my grandmother died disease free in her nineties, and my oldest and fourth uncles died of no other maladies. My father died in his seventy-ninth year of kidney cancer. He was almost seventy-eight when he was diagnosed with the disease, and the doctor said he shouldn't have gotten cancer at that age. The doctor said he should not have gotten cancer at that age, but he didn't want to have an operation, so he just endured it and didn't even cry out in pain. Sometimes I think that my grandparents, uncle and grandparents did not have this kind of disease, so why did my father have it?

Today carefully recalled, father temper wringing, and mother because of the home planting and other matters good disagreement, he according to his old law, not scientific planting, mother if you don't listen to him, he will leave his hands off and also and the mother of the system gas, do not get up and sulked, when the collection of this season Lai know the wrong will also be a smile, to the mother of the compensation is not, but also said laughs. Don't look at my family has many daughters, but my father is not patriarchal, very love us.

There is also a problem, usually drink a lot of water, meals have to drink two or three bowls, when you want to go out, launched the bike, began to drink water, drink a little bit and a little bit, half an hour can not get out of the door. It may lead to overburdening of the kidney function, which is the problem. May my father have no illnesses in heaven and have a happy trip.

In fact, all of us have cancer cells in our bodies, which usually do not attack, but may attack when we encounter adverse stimuli. If there is such a saying, all diseases come from the gas, try to be happy, don't worry about anything, live a day to day smile.

Nowadays, not a few people suffer from malignant tumors, these malignant tumors are also commonly known as cancer, once the body suffers from cancer, then it will not only affect the normal life, but also threaten the life and health. At present, there are many factors that lead to cancer, so is cancer contagious? Below we will answer this question.

By contagion, we simply mean the spread of a disease from one person to another by some means.Infection must have three conditions, the source of infection, the means of transmission and susceptible people, and all three are indispensable. Clinical data have proved that cancer patients themselves are not the source of infection and will not be infected from one person to another.。

It has also been said thatThe reason why there are two or three identical cancer patients in one family family around is actually because they or they have the same cancer-causing genes or living environment.Such as smoking and passive smoking, excessive alcohol consumption, eating high-fat soft foods, pickled foods, moldy foods, fried foods, etc., home decoration, kitchen fumes, ultraviolet radiation, and other viral infections, family members are susceptible to this cancer and predisposed to it, which can lead to family cancer.

When one of your friends or relatives has cancer, just get along with them as before, don't be afraid to visit the patient's home or ward, and don't be afraid of physical contact like shaking hands or hugging at all, knowing that the patient especially needs your care and support at this time.

Is cancer contagious? Obviously, cancer is not contagious. Although the causes of many cancers cannot be clearly identified, they are not related to contagion. As a family member, you should give more care to the patient, and as a patient yourself, you should actively cooperate with the doctor for treatment and keep a good mindset, so that your body can recover as soon as possible.

Instructor: Li Jiaping, Professor, Chief Physician, Ph. D., Director of Department of Interventional Oncology, The First Affiliated Hospital of Sun Yat-sen University, focuses on tumor intervention and targeted therapy.

Specialties: minimally invasive interventional therapy for tumors and vascular disorders, especially for primary liver cancer, metastatic liver cancer, lung cancer, bile duct cancer, pancreatic cancer, bladder cancer, pelvic tumors, malignant solid tumors of children's abdomen, hemangiomas and vascular malformations.

Find this article useful, please like or recommend it to a friend and follow:Medlink Media。

You can rest assured that cancer is not contagious in this way, and living and working with a cancer patient will not cause a tumor to become contagious.

Because cancer cells are particularly fragile, after leaving the body, without nutrients, cancer cells die quickly. Therefore, cancer cells do not have the ability to spread like bacteria and viruses.

Even if a small number of cancer cells enter another person's body, it is very difficult for these cancer cells to survive because they are someone else's and belong to a foreign tissue, and the immune cells of a normal person will soon detect these abnormal cancer cells and the immune system will soon destroy them.

Therefore, as a normal person, one will not be infected with cancer. If cancer could be transmitted to each other, there would be no normal people in this world, because more than 14 million people are diagnosed with cancer every year in the world, and if tumors could be transmitted to each other, these more than 10 million patients would cause a global cancer pandemic.

Cancer can only be "transmitted" in one form.Some time ago, there was a news story about a 53-year-old foreign woman who died of a stroke in 2007. After her death, she donated her two kidneys, lungs, liver and heart, and five patients benefited. Out of these five beneficiaries, four patients were found to have breast cancer one after another, three of them unfortunately died of cancer and only one was spared. Doctors found the matter very strange and conducted genetic tests on the cancer cells, which confirmed that the cancer cells in these four patients had the same genetic phenotype and all came from the donor.

This donor may have had cancer in his body at the time of his death, but it was not detected at the time. These cancer cells entered the recipient's body through the organ transplant. Since patients who receive organ transplants need to take oral immunosuppressants for a long time to prevent immune rejection. Long-term oral immunosuppressive drugs will cause the recipient's immunity to decline, causing these cancer cells to evade the body's immune clearance, which can lead to the continuous growth of cancer cells in the recipient's body.Therefore, from this perspective, it is indeed possible for cancer to be "contagious". Generally speaking, cancer patients are not allowed to donate their organs, because there is a possibility of tumor dissemination through organ donation.

Cancer is not contagious.

For example, if someone has liver cancer, or colon cancer, or breast cancer, the disease is scary and some people will not dare to go near them, which is really unnecessary. What are you afraid of? There is nothing wrong with being afraid of the disease, but if you are afraid of people infecting you, then it is quite unnecessary, because it is impossible to be infectious. So a little bit of medical knowledge is a must.

What kind of diseases do we say are contagious? Contagious diseases! Only infectious diseases are contagious, what do we mean by infectious diseases? Simply put, it means that the disease must be transmitted through pathogenic microorganisms (e.g. viruses) as between two people in order to be contagious. For example, tuberculosis, so-and-so girl has tuberculosis, especially active tuberculosis, which means that there is mycobacterium tuberculosis in the body of the girl, and this bacterium may enter into so-and-so's brother's lungs by droplets and lead to contagiousness. Another example is Hepatitis B. The blood of a certain girl has Hepatitis B virus, and through blood transfusion, the Hepatitis B virus may be transferred to a certain brother, who may be infected with Hepatitis B because the Hepatitis B virus has been passed on.

So, an infectious disease must have a transmitter (such as a virus/bacteria), whereas cancer, on the other hand, does not have that transmitter. For example, if so-and-so has breast cancer, people who come in contact with her cannot be infected with breast cancer, because breast cancer is not caused by the presence of a certain virus, but by the body's immune/environmental factors, etc. Most cancers are related to the environment/immunity, etc., and none of these things can be transmitted. So don't be afraid.