average time of total digestion
Your body uses mechanical and chemical means to digest food and it varies depending on the individual according to Michael Picco, M.D With Mayo Clinic gastroenterologist. The digestion process takes between 24 and 72 hours, six to eight hours to pass through your stomach and small intestine. Then the food enters your large intestine (colon) for further digestion and absorption of water. Elimination of undigested food residue usually begins after 24 hours.