"Nutrition" is the study of how food affects the body, provides a source of energy, and how nutrients function. Good nutrition means getting the right amount of nutrients for the body to function correctly, and is important in fighting obesity, illness and disease.
Proper nutrition requires a proper diet of choosing healthy foods in the right combinations. The essential nutrients for healthy nutrition include proteins, carbohydrates, fats, fiber and minerals. These nutrients are absorbed as soon as they are digested, and assist metabolic processes throughout the body. Water is essential for proper nutrition as it provides the solvent for all soluble ingredients in the blood and cells.