In the dream, I heard my mother-in-law say that her son had cancer, and then her mother-in-law said that she also had cancer. What does this mean? What does this mean? I woke up crying in my dream.

According to the current etiological research results, cancer is related to heredity, but cancer is not directly inherited. Different tumors may have different modes of genetic transmission, and the role of genetic factors in most tumors is the susceptibility or tendency to carcinogens. The so-called genetic susceptibility to cancer refers to the tendency that some individuals are more prone to cancer under the same living conditions. On the basis of certain genetic characteristics, whether cancer is formed depends on many acquired factors such as mental factors, environmental factors, diet factors, living habits and so on, as well as the comprehensive effect of external carcinogens.

Therefore, people with a family history of cancer may not get cancer, and susceptible people and family members with high cancer are not susceptible to any cancer. For cancer families, there is no need to panic or bear heavy ideological burdens. From the perspective of prevention, early detection of these susceptible patients with genetic factors and timely preventive measures will certainly help to reduce the incidence of cancer. As long as you go to the cancer hospital for regular physical examination, you can achieve the goal of early detection, early diagnosis and early treatment.

In daily life, it is necessary to maintain a good mental state, eat reasonably, pay attention to the targeted selection of anti-cancer foods, choose appropriate sports and physical exercise methods, mobilize positive anti-cancer factors in the body, and constantly improve the immunity of the body. No matter whether it is cancer-prone people or family members with high cancer incidence, cancer can be avoided to the greatest extent.

Can cancer be inherited?

People with cancer are very nervous and think that cancer is difficult to cure. Having cancer is equivalent to being sentenced to death. But modern science has found a cure for cancer with a high survival rate. There have been many works on this topic. What we are discussing now is not a cure, but whether cancer will be inherited. At this point, through the unremitting efforts of scientists, a preliminary answer is given.

To find out whether cancer can be inherited, we must first know the cause of cancer. How is cancer caused? It is transformed from normal cells. The division of cancer cells is like a wild horse that is out of control. When the number of cancer cells in human cells exceeds 6.5438+0 million, some cancer symptoms will appear. So how do normal cells mutate into cancer cells? For example, viruses, rays and chemicals act on DNA in cells, which changes its structure or function, thus leading to changes in metabolism and changes in cell proliferation to become cancer cells. DNA is the basic substance of heredity. Once DNA changes, it will be passed on to the next generation. In this sense, cancer is related to heredity.

Is it possible to conclude that cancer is related to heredity: the next generation of cancer patients will get cancer? The answer is no, why? Because human cells are divided into somatic cells and reproductive cells, such as muscle cells, bone cells and nerve cells, there is no direct connection between the previous generation and the next generation. Only germ cells-sperm and egg cells-are the cells that transmit genetic information between parents and children. When the DNA in the germ cells of parents and mothers becomes cancerous, all the cells in their children get the genetic information of this change, and cancer may occur, which is a kind of "heredity"

Somatic cells die with the end of life. Therefore, the DNA of local somatic cells (such as cells of an organ or a tissue) changes in the acquired environment and becomes cancer cells, so the daughter cells produced by cell division are still cancer cells, which will not affect the canceration of DNA in germ cells, so this cancer cell will not be passed on to future generations, which is a kind of "non-hereditary" cancer.

The dividing line between "hereditary type" and "non-hereditary type" of cancer mainly lies in whether the DNA in the cell has changed, and whether it is congenital inheritance? Or acquired? Then there are some hereditary cancers and some non-hereditary cancers in the same cancer. How to divide this situation? Generally, hereditary cancer has a family history and early onset. There are cancers in both organs (such as breast and kidney), and there are more than one cancer. On the contrary, non-hereditary cancer has no family history, late onset, unilateral and few tumors.

Several research methods of cancer;

First, the method of investigating family history. For example, in Jiangsu, Henan and Shanxi, the proportion of esophageal cancer and liver cancer with family history is very large. More interestingly, some families suffer from breast cancer, and every generation has patients, and some even have male breast cancer, such as a family with three men and four women suffering from breast cancer. Some brothers both have breast cancer, and their daughters also have breast cancer.

Second, the twin survey method Someone analyzed 52 cases of leukemia patients and their twin brothers and sisters. Of these 52 pairs of twins, 22 are identical twins. Results Among the 52 twins, there were 5 cases of leukemia, all of which were identical twins. There are two points worth noting in these data. One is that the onset age of twins is earlier than ordinary children, and the other is that the onset time of twins is not far apart.

Third, compare genetic susceptibility, specifically, people with certain genetic characteristics are more likely to suffer from certain cancers. For example, patients with congenital stupidity are prone to leukemia, and in testicular feminization syndrome, there are more people suffering from gonadal cell carcinoma.

From the perspective of genetics, both hereditary and non-hereditary cancers are caused by cell canceration. Modern research shows that one mutation is not enough to make normal cells cancerous, and it takes two mutations to make them cancerous. The theory of "secondary mutation" holds that if the first mutation occurs in germ cells or fertilized eggs, then all somatic cells of this individual will bring about a mutation, which is a necessary condition for canceration, but not a sufficient condition for canceration; No matter which cell mutates for the second time in the future, it will become a cancer cell.

Because cell canceration requires at least two mutations, children can only inherit one mutation from their parents. Therefore, certain conditions are needed to achieve secondary mutation and make cancer possible. For example, some families have many people with colonic polyposis, but only some people can turn into colon cancer under certain conditions. Therefore, paying attention to environmental protection and reducing harmful substances in the environment will reduce people's exposure to carcinogens, thus reducing the occurrence of cancer.

Don't worry, you can go to the hospital for a checkup.