A Review of Dietary (Phyto)Nutrients for Glutathione Support Glutathione is such a critical soldier in our line of defense that our bodies make it themselves. We even have mechanisms that recycle and reuse it. But what happens when our toxic Glutathione: What It Is, Why You Need It, How You Can Increase It The Amino Company Changes in levels of the antioxidant glutathione in brain and blood across the age span of healthy adults: A systematic review ScienceDirect