“Clinical symptoms [during states of inadequate intake of amino acids] may include depression, anxiety, insomnia, fatigue, weakness, and growth stunting in the young”
Amino Acids - Body’s building blocks
Adequate amounts of amino acids are necessary to produce neurotransmitters and hormones, for muscle growth, and to aid in other cellular processes
9 of 20 needed for protein synthesis are “essential”, meaning we need to obtain them from food or supplements - but many of the non-essential amino acids have specific health benefits. In folks with compromised GI health, full-spectrum supplementation may be the best means of administering them.