* [[Non-Hodgkin's lymphoma]]
==Causes==
* Age: Generally, the risk of NHL increases with advancing age.
*Infections
**Infection with HIV
**Infection with Epstein-Barr virus (EBV), one of the etiologic factors in mononucleosis
**Infection with Helicobacter pylori, a bacterium that lives in the digestive tract
**Infection with hepatitis B or hepatitis C virus
* Medical conditions that compromise the immune system
**HIV
**Autoimmune disease
**Use of immune suppressive therapy (often used following organ transplant)
**Inherited immunodeficiency diseases (severe combined immunodeficiency, ataxia telangiectasia, among a host of others)
* Exposure to toxic chemicals
**Farm work or an occupation with exposure to certain toxic chemicals such as pesticides, herbicides, or benzene and/or other solvents
**Hair dye use has been linked to higher rates of lymphoma especially in patients who started to use the dyes before 1980.
* Genetics: Family history of lymphoma
* New research from Sweden shows that if the intestinal villi don't recover, people with [[Celiac Disease]] have nearly four times the risk of lymphoma compared to healthy people without celiac disease.