Glutathione: Master Antioxidant, Reducing Oxidative Stress, and Detoxification Pentose Phosphate Pathway made simple. This pathway has two major jobs: Generate NADPH Produce ribose 5 phosphate NADPH protects cells from oxidative stress and supports fatty acid, cholesterol, steroid, nitric oxide, and respiratory burst NADPH Is For Growth; Throw Out Your Antioxidants Fire In A Bottle The methionine cycle and folate cycle explored in mature erythrocytes