Acute inflammation is the body's natural response to tissue damage. Its purpose is to defend the body against harmful substances, dispose of dead or dying tissue and to promote the renewal of normal tissue. Therefore, inflammation is normal if we are ill from a virus or bacterial infection or we injure ourselves.However, chronic inflammation is different. Chronic inflammation is involved in many autoimmune diseases including rheumatoid arthritis, allergies and even some cancers. Mounting evidence is now showing that chronic inflammation is also likely part of the Alzheimer’s puzzle.