mus ▁or ▁kw ashi ork or . ▁K w ashi ork or ▁was ▁once ▁attributed ▁to ▁pure ▁protein ▁def ic iency ▁in ▁individuals ▁who ▁were ▁cons uming ▁enough ▁cal ories ▁(" s ug ar ▁baby ▁synd rome "). ▁However , ▁this ▁theory ▁has ▁been ▁challeng ed ▁by ▁the ▁finding ▁that ▁there ▁is ▁no ▁difference ▁in ▁the ▁di ets ▁of ▁children ▁developing ▁mar as mus ▁as ▁opposed ▁to ▁kw ashi ork or . ▁Still , ▁for ▁instance ▁in ▁Diet ary ▁Reference ▁Int akes ▁( D RI ) ▁maintained ▁by ▁the ▁US DA , ▁lack ▁of ▁one ▁or ▁more ▁of ▁the ▁essential ▁am ino ▁ac ids ▁is ▁described ▁as ▁protein - energy ▁mal nut r ition . ▁ ▁See ▁also ▁Bi ological ▁Value ▁( B V ) ▁Ed ible ▁protein ▁per ▁unit ▁area ▁of ▁land ▁Ess ential ▁fat ty ▁acid ▁Ess ential ▁gen es ▁List ▁of ▁standard ▁am ino ▁ac ids ▁Low - prote in ▁di et ▁Orth om ole cular ▁medicine ▁Prote in ▁Dig est ibility ▁Correct ed ▁A min o ▁Ac id ▁Sc ore ▁K et ogen ic ▁am ino ▁acid ▁Gl uc ogen ic ▁am ino ▁acid ▁ ▁References ▁ ▁External ▁links ▁ ▁A min o ▁acid ▁content ▁of ▁some ▁veget arian ▁food s ▁at ▁veg an he alth . org . ▁A min o ▁Ac id ▁Pro files ▁of ▁Some ▁Common ▁Fe eds ▁at ▁Virginia ▁Te ch . ▁M ole cular ▁Express ions : ▁The ▁A min o ▁Ac id ▁Collection ▁at ▁Florida ▁State ▁University . ▁Fe atures ▁detailed ▁information ▁and