To raise the question of the possibility of transmitting stomach cancer between different generations of the same family will be fundamentally wrong. This disease, the mechanism of which is not fully understood. But groups of conditions that increase the risk of cancer formation are clearly defined.
These risk conditions include:
- various lesions of the gastric mucosa;
- sharp decrease in immunity;
- stress;
- ecology.
However, in some people the presence of these risks does not cause the development of stomach cancer, and in others under the same conditions oncology is formed early enough, already at the age of 40-50 years.
Often, these people have a genetic predisposition to such development, transmitted from ancestors. A number of domestic and foreign studies have shown that there are genetic mutations of certain chromosome groups that are found in the majority of those suffering from this disease. These mutations can be both germinal and somatic.
From parents to children inherited by the gene itself with such mutations, that is predisposition to the development of stomach cancer, but not the disease itself. It is because of the predisposition transferred from the parents, in the presence of factors that increase the risk of disease, there is oncology.
Stomach cancer and heredity
There are various points of view regarding the significance of hereditary factors in the development of cancer. Moreover, opposing opinions, as a rule, are supported by research in this field.
For example, research VM.Uspensky, indicate a fairly strong coincidence in children and parents of the cellular composition of the fundal glands and the endocrine apparatus of the stomach. And also the state of the autonomic nervous system. These factors form a predisposition to certain changes in the body that can cause cancer.
In addition, found that the blood group also affects the development of the disease. In people with blood type A, cancer occurs more often than others. That is, these studies directly link hereditary factors and the risk of developing gastric cancer.
A analysis of 126 pairs of twins, one of which detected gastric cancer, N.A.Martynova shows a relatively low percentage of the occurrence of a similar disease in a twin. And in cases with odnoyaytsevymi such percentage was higher than that of the frogs. The total percentage of duplication of the disease in pairs of twins was 12%.