Nutrition is the process and science of how living things take in and use food and water to support life, growth, and health. It includes everything from eating and digesting to absorbing nutrients and using them for energy, repair, and disease prevention.

Basic definition

  • In simple terms, nutrition is the act or process of nourishing the body and the sum of all processes by which an organism takes in and uses food substances.
  • It also refers to the scientific study of how foods, nutrients, and dietary patterns affect health, disease risk, growth, and overall body function.

Key elements of nutrition

  • Nutrition involves nutrients such as carbohydrates, proteins, fats, vitamins, minerals, and water, which the body needs to function properly and maintain health.
  • The process typically includes three main steps: consuming food and drink, breaking them down into nutrients, and transporting and using those nutrients throughout the body.

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