Before revision: Amino acid(s) Daily intake in mg per kg body mass WHO US NAMFAO (2018) young children catch-up growth H Histidine 10 1466 I Isoleucine 20 1995 L Leucine 39 42198 K Lysine 30 38183 M Methionine+ C Cysteine 10.4 + 4.1(14.5 total) 19 total88 F Phenylalanine+ Y Tyrosine 25 (total) 33 total177 T Threonine 15 20103 W Tryptophan 4 529 V Valine 26 24130 The recommended daily intakes for children aged three years and older is 10% to 20% higher than adult levels and those for infants can be as much as 150% higher in the first year of life.
After revision: Essential (+ conditional) amino acid(s) Daily intake in mg per kg body mass WHO US NAMFAO (2018) young children catch-up growth H Histidine 10 1466 I Isoleucine 20 1995 L Leucine 39 42198 K Lysine 30 38183 M Methionine+ C Cysteine 10.4 + 4.1(14.5 total) 19 total88 F Phenylalanine+ Y Tyrosine 25 (total) 33 total177 T Threonine 15 20103 W Tryptophan 4 529 V Valine 26 24130 The recommended daily intakes for children aged three years and older is 10% to 20% higher than adult levels and those for infants can be as much as 150% higher in the first year of life.