Glutathione serves the cell as an antioxidant and is an agent for the detoxification of pollutants Glutathione is such an important antioxidant in human physiology, meaning it acts to combat oxidative stress. Strategies for increasing glutathione include: Consume sulfur rich foods like cruciferous vegetables Ensure you get Pseudopeptide bond in Glutathione Why does glutathione have an unusual peptide bond between the carboxyl group of the glutamate side chain and the amine group of cysteine? Homework.Study.com