Non-Hodgkin’s lymphoma is a cancer of the lymphatic system. The lymphatic system is an organ system that is closely tied to both the circulatory system and the immune system. It assists in maintaining fluid levels and defending the body against pathogens. NHL is the most commonly diagnosed cancer, and therefore one of the most researched cancers. Studies have shown that a diet high in fruits and vegetables has protective effects, whereas a diet high in meat, sugar, and dairy has been associated with a higher risk.