Snacking does not usually cause leukemia, but eating too much may be harmful to your health. The exact cause of leukemia is still not well understood, and many factors are thought to be possibly related to the development of leukemia. Viruses may be the main factor, in addition to genetic factors, radiation, chemical poisons or drugs. Among chemical poisons, benzene may cause leukemia, and the toxic effects of benzene are related to the cumulative dose. Whether snacks will lead to leukemia is mainly to check whether the snacks contain the chemical poison benzene, normal snacks do not contain benzene, so generally does not lead to leukemia; but snacks contain more food additives, which may adversely affect health, to avoid eating too much.