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 How Keeping Glutathione Levels Up Can Benefit Your Health & Your Vitamin D Status GrassrootsHealth Selenium Linus Pauling Institute Oregon State University Glutathione Depletion and Stalwart Anticancer Activity of Metallotherapeutics Inducing Programmed Cell Death: Opening a New Window for Cancer Therapy ACS Omega Role of Selenium Dependent Glutathione Peroxidases (Seleno GPxs) in Radio Modulation: Lessons for Radiation Oncology Biological Trace Element Research Springer Nature Link