What are non-essential amino acids

Non-essential amino acids are building blocks of proteins that the body can produce itself. Their rate of synthesis depends only on the intake of macronutrients [2].

The non-essential amino acids include [3]:

  • Alanine
  • Aspartic acid (= Aspartate)
  • Glutamic acid (= Glutamate)
  • Serine

If the body lacks an amino acid or is one formed from it endogenous Active ingredient, such as a hormone, no longer sufficiently produced, important body functions are no longer optimally guaranteed.

In other literature, the amino acids asparagine, glutamine, glycine and proline are also stated as not essential [1].


  1. Rehner G, Daniel H: Biochemistry of Nutrition. 2nd revised and expanded edition. Spectrum Academic Publishing House, Heidelberg, Berlin 2002
  2. Hahn A, Ströhle A, Wolters M: Nutrition - Physiological Basics, Prevention, Therapy. Wissenschaftliche Verlagsgesellschaft mbH Stuttgart 2006
  3. Löffler G, Petrides P, Heinrich P: Biochemie & Pathobiochemie, 8th edition, Springer Medizin Verlag Heidelberg 2007
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