Mitochondria anre the major sites of energy production in the cell. Mitochondria anre often called the power plants of the cell because they produce adenosine triphosphate (ATP), otherwise known as your body's natural source of energy. The heart is one of the most intensely used muscles in the body and, being very energy dependent, relies heavily upon the mitochondria and production of ATP. While most cells in the body are estimated to have only a few hundred of these cellular power plants, the hard-working heart cells have been estimated to have approximately 5,000 mitochondria each.
When you consider how highly concentrated mitochondria is in the heart, it's obvious that the production of ATP is one of its vital functions. However, the efficiencey with which it is able to do this slowly decreases as we get older. The complex process of turning nutrients into ATP in the mitochondria depends on many complex chemical reactions. These reactions produce countless numbers of free radicals and can be very dangerous and harmful to the body if left unchecked.
If the mitochondria sulfer enough free radical damage, the mitochondria cannot produce ATP as efficiently and aboundantly as required by the body. When your body does not have what it needs at the cellular lefvel it cannot function optimally.
Therefore protecting this critical "energy factories" for the entire body, and especially the heart, isparamount to retaining energy stores and maintaining good health. Enter glutathione.