Some people develop cancer because it generates with the mutated gene can lead to cancer. Usually such genes are inherited from the father or mother, called hereditary cancer. And believed all cancers caused by gene mutations, but in most cases of cancer, these changes in the structure of genes for many years to occur. A persons who develop cancer hereditary cancer sometimes in many young people because the gene mutation was present at birth. every person is born with two sets of genes, one from each parent. Function of human genes direct the behavior of cells. When the disease becomes damaged cells or environmental toxins, healthy genes and will direct cellular rejuvenation, or in some cases, death cell. When genes do not function properly, it becomes abnormal cellular behavior, which can sometimes lead to cancerous growth. Widespread genetic damage causes cancer development may take decades to occur, if not at all. For people with hereditary cancer genes, cancer risk is much higher, and they may develop cancer much earlier in their lives. Most research shows that people who have switched at birth in duplicating genes cancer risk compared to the rest of the population.
