How brain tumors are caused

Brain tumor is brain tumor. The causes of brain tumor include ionizing radiation, gene mutation, decreased immunity, etc.

1. When ionizing radiation is

applied to the head of patients for a long time, it can lead to changes in the brain, thus increasing the risk of brain tumor.

2.

When the gene mutation occurs in the brain of patients with gene mutation, the body can not control the normal growth of brain cells and further induce brain tumor.

3. When patients with decreased immunity are

infected with human immunodeficiency virus, along with the progress of the disease, it can lead to defects in their immune function and increase the risk of tumor occurrence.