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'sa 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 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 infection. 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 60 or over.
Source :- https://www.mayoclinic.org/diseases-conditions/non-hodgkins-lymphoma/symptoms-causes/syc-20375680
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