You are here

Newer concepts of the indispensable amino acids.

Newer concepts of the indispensable amino acids.

In healthy adult humans, eight amino acids (isoleucine, leucine, lysine, methionine, phenylalanine, threonine,
tryptophan, and valine) were shown classically by nitrogen balance studies to be indispensable. Subsequent studies
classifying histidine as indispensable are reviewed in this article. We also review the evidence that in certain
nutritional or disease states or in certain stages of development otherwise dispensable amino acids may become
indispensable. Arginine, cysteine, and tyrosine thus may be considered as acquired indispensable amino acids.
Evidence for the indispensability of taurine is also considered. We propose a classification of the indispensability
of amino acids based on clinical and therapeutic considerations.

Link to Source:

American Journal of Clinical Nutrition

Newer concepts of the indispensable amino acids. (Website temporarily unavailable.)

*******

Research: