Cysteine is an essential amino acid that acts as the limiting amino acid for glutathione synthesis in humans. Factors that increase demand for glutathione may increase demand for cysteine, and hence methionine. Such demands have been hypothesized to increase the risk for kwashiorkor.
cyStEine iS an essEnTIal amino acId thAt acts as the lImiting AmInO AcId fOr gLuTAthIone synthESiS in Humans. FacToRs thaT IncreasE DemAnd foR GluTaTHioNE may IncrEAse deMand For cysTeINE, And HeNCE MethioNIne. such demands hAve BEen hyPoTHEsiZed to INcReasE ThE rIsk fOR kWasHioRKor.