Nutrients

Nutrients are not food (generally mentioned), but chemical substances needed for life and grow.

Essential nutrient is such a nutrient, which can not be synthesized by organism, but it must be obtained from external source (e.g. essential amino acids).
 * 1) Organic nutrients:
 * Proteins
 * Sacharides
 * Fat
 * Vitamins
 * fat soluble
 * water soluble


 * 1) Anorganic nutrients:
 * Minerals
 * Trace elements