The mitochondria, also referred to as "power plants" of the cells, are the conductors of the genetic orchestra; they control the aging, division and death of the cells. GSH as the most important antioxidant in the human body contributes significantly to enable the power plants of the cells to produce enough energy. GSH is so important that scientists often view glutathione levels in the cells as an indicator of health. A low level of "reduced", i.e. active glutathione, leads to an energy deficiency by which all cells and to a great extent the nerve cells are affected.
With glutathione, nature has provided us with a multifunctional substance which as a result of its particularly beneficial redox capacity is one of the most effective antioxidants.
Food can contain reduced glutathione (GSH) in very different amounts.
High levels of GSH are normally found in plant growth stages with high metabolic activity, such as in fresh germs and sprouts or in carefully processed derivatives. Also fresh meat, uncooked fruit and vegetables (especially asparagus) as well as raw milk can contain high amounts of reduced glutathione.
Low values, on the other hand, are found in processed foods (e.g. also in pasteurized milk); however, this is not the case with frozen products which can have similar high glutathione levels as fresh food. Examples for the amounts of reduced glutathione in food can be found here.