Most clinical conditions and aging are characterized by cell membrane phospholipid oxidative damage, resulting in loss of cellular function. Clinical studies have shown the "benefit of Membrane Lipid Replacement supplements in replenishing damaged membrane lipids and restoring mitochondrial function." There has been shown as a useful supplement in many conditions such as chronic fatigue, and chronic infections, neurodegenerative and neurobehavioral diseases, and cancers. The phospholipids form the matrix for all cellular membranes and are essential for the function of cell membrane enzymes. The cell membranes are damaged by oxidative free radicals in most acute and chronic diseases. One such membrane lipid replacement therapy is NTFactor Lipids®, available as a powder or pills.