Fighting Free Radicals and Oxidative Stress
Glutathione has been described as "the mother of all antioxidants" and this is true, but it does much more.  It also boosts and prolongs the protective activity of other antioxidants in the body, like vitamin C and E.  This is called antioxidant recycling, and it is crucial as we strive to protect the blueprints inside our cells - DNA - from the damaging effects of oxidative stress.  This is important because unchecked oxidative stress is associated with so many diseases - including cancers, neurodegenerative diseases such as Parkinson's and Alzheimer's, and heart disease - that it can aptly be a considered a killer.  Oxidative stress is certainly involved in the death of damaged individual cells, and contributes significantly to the progression of life threatening diseases.
You Can't Live Without Glutathione
Glutathione is absolutely necessary for health and vigor.  In fact, if you go 24 hours without food, your liver will steal amino acids from the protein in your muscles to make this critical glutathione compound.  I can't promise you the fountain of youth, but i can promise that you will live a longer, healthier, more youthful life with optimal levels of glutathione.