Leukemia starts in the bone marrow where blood cells are made. It happens when certain blood cells divide without control or order. The abnormal cells crowd out the healthy blood cells. This causes many of the symptoms.
The cause of leukemia is not clear. It is likely a combination of genes and environment.
AML and CML are most common in adults over 60 years. ALL is most common in children.
Other things that may raise the risk of leukemia are:
Acute myeloid leukemia. EBSCO DynaMed website. Available at: https://www.dynamed.com/condition/acute-myeloid-leukemia-aml. Accessed March 24, 2021.
Van Maele-Fabry G, Gamet-Payrastre L, et al. Household exposure to pesticides and risk of leukemia in children and adolescents: updated systematic review and meta-analysis. Int J Hyg Environ Health. 2019;222(1):49-67.
Leukemia. American Cancer Society website. Available at: https://www.cancer.org/cancer/leukemia.html. Accessed March 24, 2021.
Leukemia. Leukemia & Lymphoma Society website. Available at: http://www.lls.org/leukemia. Accessed March 24, 2021.
Leukemia. National Cancer Institute website. Available at: https://www.cancer.gov/types/leukemia. Accessed March 24, 2021.
A PET scan may improve leukemia care. UW Health website. Available at: https://www.uwhealth.org/news/a-pet-scan-may-improve-leukemia-care/14001. Accessed March 24, 2021.
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