Nutrition is a science about the nature, distribution and metabolism of nutrients in food and the consequences of insufficient food intake. Nutrients are chemicals that can be absorbed by food and used to improve health. Some nutrients are necessary because they cannot be synthesized by the body, so they must be obtained from food. Essential nutrients include vitamins, inorganic salts, amino acids, fatty acids and some carbohydrates as energy sources. Non-essential nutrients refer to nutrients that the body can synthesize from other chemicals, although they can also be obtained from diet.

The English word Nutrition is interpreted as:

● Organic process in which organisms absorb and use food and liquid to maintain their normal functions, growth and self-maintenance.

Study on the relationship between diet and health and disease.

A concept and idea of pursuing the best combination of nutrients and all foods to achieve the best performance of the body.

Nutrients refer to chemical components in food that can provide energy, body composition, tissue repair and physiological regulation. All substances that can maintain human health and provide growth, development and labor are called nutrients. The essential nutrients for human body are protein, fat, sugar, inorganic salts (minerals), vitamins, water and cellulose.