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Risk factors

By Mayo Clinic staff

Living With Cancer

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In most cases, people diagnosed with non-Hodgkin's lymphoma don't have any obvious risk factors, and many people who have risk factors for the disease never develop it. Some factors that may increase the risk of non-Hodgkin's lymphoma include:

  • Medications that suppress your immune system. If you've had an organ transplant, you're more susceptible because immunosuppressive therapy has reduced your body's ability to fight off new illnesses.
  • Infection with certain viruses and bacteria. Certain viral and bacterial infections appear to increase the risk of non-Hodgkin's lymphoma. Viruses linked to increased non-Hodgkin's lymphoma risk include HIV and Epstein-Barr virus. Bacteria linked to an increased risk of non-Hodgkin's lymphoma include the ulcer-causing Helicobacter pylori.
  • Chemicals. Certain chemicals, such as those used to kill insects and weeds, may increase your risk of developing non-Hodgkin's lymphoma. More research is needed to understand the possible link between pesticides and the development of non-Hodgkin's lymphoma.
  • Older age. Non-Hodgkin's lymphoma can occur at any age, but the risk increases with age. It's most common in people in their 60s or older.
References
  1. Non-Hodgkin's lymphomas. Fort Washington, Pa.: National Comprehensive Cancer Network. http://www.nccn.org/professionals/physician_gls/f_guidelines.asp. Accessed May 29, 2013.
  2. Hoffman R, et al. Hematology: Basic Principles and Practice. 6th ed. Philadelphia, Pa.: Saunders Elsevier; 2012. http://www.mdconsult.com/books/about.do?about=true&eid=4-u1.0-B978-0-443-06715-0..X5001-8--TOP&isbn=978-0-443-06715-0&uniqId=230100505-56. Accessed May 29, 2013.
  3. Non-Hodgkin lymphoma. Leukemia & Lymphoma Society. http://www.lls.org/resourcecenter/freeeducationmaterials/lymphoma/nonhodgkin. Accessed May 29, 2013.
  4. What you need to know about non-Hodgkin lymphoma. National Cancer Institute. http://cancer.gov/cancertopics/wyntk/non-hodgkin-lymphoma. Accessed May 29, 2013.
  5. Taking time: Support for people with cancer. National Cancer Institute. http://cancer.gov/cancertopics/takingtime. Accessed May 28, 2013.
  6. Lymphoma SPOREs. National Cancer Institute. http://trp.cancer.gov/spores/lymphoma.htm. Accessed May 29, 2013.
  7. Cook AJ. Decision Support System. Mayo Clinic, Rochester, Minn. May 24, 2013.
DS00350 July 26, 2013

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