We've added a new topic Digestion in How to Lose Weight

'Digestion' is the mechanical and chemical breakdown of food into smaller components that are more easily absorbed into a blood stream, for instance. In mammals, food enters the mouth, being chewed by teeth, with chemical processing beginning with chemicals in the saliva from the salivary glands. Other organisms use different to digest food. Digestive systems Digestive systems take many, many form ...Digestion