From Health Facts
Latest Edit: Iva 2012-07-18 (EDT)
Nutrients are derived from the food that you eat, water that you drink and air that you breathe. They are the base chemicals that the human body needs to live and grow.
Nutrients are used to build and repair tissues, regulate body processes and as an energy source for the body. They are classified as macronutrients or micronutrients and as essential or non-essential nutrients.