When it comes to cancer, many people will find a question, why today's cancer seems to be somewhat contagious, and even sometimes the news will appear that a family of several people suddenly found xx cancer.
Is cancer as contagious as viruses and bacteria?
Cancer is not contagious, but some carcinogenic factors can be contagious
The so-called cancer infection is mainly divided into two types----- the cancer cells themselves spread from one patient to another; and the virus and bacterial infection that cause cancer.
Through these two points, in theory, cancer cells are relatively difficult to infect.
There are two main reasons for this---
1. Cancer cells are actually very fragile
Unlike viruses and bacteria, cancer cells need to be placed in their original internal environment, and once they are detached, they are exposed to the outside world, in fact, just like the Western Heavens.
2. The human body has a strong immune system
You know, the human body itself has a strong immune system, which basically eliminates most foreign invaders. In more than 300 years of research, it has not been found that there is a class of cancer cells that humans know can be directly transmitted.
Therefore, according to the existing common view---- cancer cells do not exist in human-to-human transmission.
Although it is not contagious, cancer cells may be inherited!
The harm of cancer is not only that it has the characteristics of pathogenesis and difficult treatment, but also shows familial clustering. Simply put, some cancers have genetic characteristics, and if someone in the family has cancer, the probability of cancer in the younger generation is higher.
But this is not the case for all cancers, and clinical data shows that there is a familial cluster of the following six types of cancer:
First, thyroid cancer
The thyroid gland is the endocrine organ of the human body, and its function is mainly to regulate the body's calcium and phosphorus balance, promote growth and development, and regulate the metabolism of proteins, sugars, and fats.
Compared to other cancers, although the incidence of thyroid cancer is not particularly high.
Clinical data found that if there are three or more cases of cancer in the first-level relatives, siblings, siblings/parents and children in the family, the probability of cancer in the rest of the family will exceed 94%.
Second, stomach cancer
Stomach cancer is one of the most frequent malignant tumors.
In all people with stomach tumors, about 10% of people belong to hereditary stomach cancer, that is to say, the genes of the previous generation are directly inherited to patients, and the largest proportion of heredity is diffuse gastric cancer.
Third, breast cancer
Epidemiological surveys have shown that if someone in a close relative has breast cancer, the risk of being entangled in breast cancer will increase by 3 times.
If two close relatives have breast cancer, the probability of their own disease will increase to 7 times higher.
In particular, there are many people in the family who are less than fifty years old and are plagued by breast cancer, which is likely to be caused by family breast cancer genes.
Fourth, colorectal cancer
Although many patients with bowel cancer in the clinic are slowly evolved from intestinal polyps, what we do not understand is that familial adenomatous polyps are actually autosomal dominant inheritance, in short, colorectal cancer also has genetic characteristics.
Fifth, liver cancer
As a malignant disease with increasing incidence year by year, liver cancer also has hereditary characteristics, which has been confirmed from the genetic level and recognized by the medical community.
For people in the same family who have cancer, especially people with multiple liver cancer patients, regardless of the quality of the body, a comprehensive liver examination should be done every year, such as ultrasound, liver function, etc.
Sixth, lung cancer
The latest epidemiological reports show that a person's close relatives have lung cancer, and he maintains a smoking habit, and his risk of lung cancer is 14 times higher than that of the average person.
Not only that, Japanese scholars survey data prove that about 36% of people with lung squamous cell carcinoma have genetic characteristics.
Among the women with alveolar cell carcinoma, there is a family history of up to 58.3%, so these high-risk groups must usually take preventive measures, first of all, to avoid smoking and stay away from second-hand smoke.
For these cancers, if a relevant medical history is found in the immediate family, preventive measures must be taken.
The first is to eliminate cancer through regular annual check-ups, and the second is to actively intervene after early detection of abnormalities to eliminate tumor risk factors and minimize the risk of cancer.