In 2013, a study by David Sinclair of Harvard and his colleagues reported that the mitochondria in lab mice was restored to youthful productive levels when treated with NMN (nicotinamide mononucleotide), a substance which boost levels of NAD in the body. Such a study speaks well to the success of increasing NAD in our own bodies, and the benefits to be gained from doing this. Increased levels of NAD can rejuvenate our mitochondria to the point where it acts like its more youthful self, allowing us, in turn, to rebound to our own youthful vigor while decreasing the threat of so many all too common degenerative ailments.