Certain chemotherapies used for lymphoma or other types of cancer
- Down syndrome and some other genetic diseases
- Chronic exposure to benzene (such as in the workplace) that exceeds federally approved safety limits
- Radiation therapy used to treat other types of cancer
- Tobacco smoke
Leukemia is not contagious, you will not be able to catch it from someone.
Last updated: 5/21/2010 4:28:57 PM