The best preventive medicine against cancer, arthritis, heart disease and allergies may be packaged in the fruits and vegetables we consume daily. Gerson therapy is based upon just this belief. Conceived in the 1940s by the German naturopath Dr. Max Gerson, it is today a well-recognized alternative therapy. According to this therapy, one`s diet must include generous amounts of fresh, organically grown fruits, vegetables and whole-grains along with 13 glasses of fresh fruit juice every day. Enemas, including coffee or chamomile enemas, are recommended on a regular basis to detoxify the body and replenish it.