Fasting refers to complete abstinence from food for a short or long period for a specific purpose. The word is derived from the old English, ‘feastan’ which means to fast, observe, be strict. Fasting is nature’s oldest, most effective and yet least expensive method of treating disease. It is recognised as the cornerstone of natural healing. Dr. Arnold Eheret, the originator of the muscusless diet healing system, describes it as " nature’s only universal and omnipotent remedy of healing" and "nature’s only fundamental law of all healing and curing." The practice of fasting is one of the most ancient customs. It is followed in almost every religion. The Mohammedan, the Buddhists, the Hindus and many others have their periods of strict fasting. The saints of medieval times laid great stress on this method. Fasting indisease was advocated by the school of natural philosopher, Asclepiades, more than two thousand years ago. Throughout medical history, it has been re