What three kinds of processing does food go under in the body?

1. Digestion: This is the breakdown of food into smaller molecules that the body can absorb. This process involves both mechanical (chewing, churning) and chemical (enzymes, acids) actions.

2. Absorption: Once broken down, nutrients from food are absorbed into the bloodstream through the walls of the small intestine. This is where the body takes in the necessary energy and building blocks for growth and repair.

3. Metabolism: This is the sum of all chemical reactions in the body that are necessary to maintain life. These reactions include the conversion of food into energy, the synthesis of new molecules, and the breakdown of waste products.

While these three processes are distinct, they are interconnected and work together to ensure that the body receives the nutrients it needs to function properly.