Causes and prevention of chronic lymphocytic leukaemia (CLL)

The exact cause of CLL is unknown. But there are certain things called risk factors that can increase your chance of getting the disease. These include:

  • Age: CLL occurs in people over 50, with most cases occurring in those over 65 years of age. It does not affect children.
  • Gender: It is slightly more common in men than women.
  • Family history: In some cases, close family members can develop CLL. This is called familial CLL.
  • Ethnic group: CLL is most common in white populations of European origin. It is less common in those of African origin and rare in Asian populations.

Remember CLL is not infectious and cannot be passed on from person to person.

Call our National Cancer Helpline

Freephone 1800 200 700 to talk to a specialist cancer nurse
It's open Monday-Thursday from 9am to 7pm and Friday from 9am to 5pm