The cancer disease is called a genetic disease. Normally, our cells grow or multiply the amount of cells that the body needs. When we have cancer disease, our cells grow uncontrollably. The uncontrollable cells create a tumor. There are two kinds of tumors. The cancerous tumor or dangerous tumor if we eliminate the dangerous tumor, will grow back. On the other hand, the benign tumor or unharmed tumor, when we eliminate it, will not grow back. In general, our immune system eliminates abnormal cells or overgrown cells, but the cancerous cells trick the immune system not to attack them. Normally, cells multiply when the body needs it, but when you have cancer disease, the cells multiply without body needs.
What causes cancer disease? It is caused by mutation of genes . You can have the cancer disease by inheritance of your parents or environments. If you live near nuclear radiation areas or are exposed to dangerous chemicals, your genes may get mutated, you may develop cancer disease. Scientists can keep cancer patients alive longer, but they can’t cure completely the cancer disease.