PDF] Blood glutathione concentrations in a large scale human study. Semantic Scholar LACKING MOTIVATION? The answer may be low glutathione levels! Feeling "motivated" equates to the effort it takes to overcome a "cost" in pursuit of the "reward". In your brain, much of this Effects of Glutathione on Red Blood Cell Intracellular Magnesium Hypertension Differentiating Changes in Glutathione Levels from Cytotoxic Events Using Multiplexed Assays