Because there is not yet a certain known cause of lymphoma, there is no identifiable way to prevent its occurrence. However, studies of non-Hodgkin's lymphomas have linked the disease with exposure to certain chemicals, such as pesticides, solvents and fertilizers. Studies of farmers, pesticide applicators and other similar type occupations for example, have shown that non-Hodgkin’s lymphoma is linked to herbicides and insecticides.
A National Cancer Institute study also suggests that drinking water contaminated with nitrate, a chemical found in fertilizers, may pose an increased risk of non-Hodgkin's lymphoma.
Read about general prevention measures for cancer from the the OSU James Cancer Hospital and Solove Research Institute and from the American Cancer Society.