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2.2. Nutrients


The nutrients are chemicals containing foods and are necessary for the cells to live. A food is made up of one or more types of nutrients. For example, milk is a food made up of nutrients such as vitamins A and Dproteinscarbohydratesmineral salts and fats.

The functions of nutrients are:

  • Energetic. Nutrients provide the energy cells need to function. For example, for muscles to move, muscle cells need to contract, and they need energy to do so.
  • Plastic or structural. Nutrients are needed for the growth and renewal of cells and tissues that are destroyed by injury or by cell renewal.
  • Regulatory. Nutrients also provide substances that allow the chemical reactions necessary for their functioning to take place in cells.

Los nutrientes tienen tres funciones: energética, estructural o plástica y reguladora