Food: Similar to food, it refers to processed or processed food.
Nutrition: The original meaning is "seeking health". According to the definition in the Encyclopedia of Nutrition Science in China, nutrition refers to the process that the body ingests food, digests, absorbs and metabolizes it in the body, and uses the substances beneficial to the body in food as the tissues and organs to meet the needs of physiological functions and physical activities.
Nutrients: refers to substances with nutritional functions, including protein, lipids, carbohydrates, vitamins, minerals and water.
Nutritional value: refers to the degree to which nutrients and energy in food meet human needs.
Health: According to WHO's definition, health refers to a state of good physical, psychological and social adaptation, not just the absence of illness or physical strength.