The process of taking in food and using it for growth, metabolism, and repair. Nutritional stages are ingestion, digestion, absorption, transport, assimilation, and excretion.
Nutrition provides the cells of an organism with food, in a form they can use. … They also need food to be able to do certain things. Malnutrition can happen when a person does not eat the right amount of nutrients. They can get better by changing their diet to have the right amount of the various nutrients.