The lymphatic system is made up of glands, lymph nodes, and a network of vessels. The tonsils, spleen, thymus, and adenoids are the glands of the lymphatic system. This system plays three major roles in the body: Immunological defense, fat absorption, and fluid balance. If the lymphatic system isn't working properly, our bodies can't fight disease or remove toxins. For this reason it's crucial to keep the fluid of the lymphatic system (lymph) moving. Slow moving lymph can lead to disease, even cancer, in some cases.