One of the most promising anti-aging supplements in the market is NAD+ supplement. NAD+ supplement provides your cells with NAD+, which is a coenzyme that plays a key role in the maintenance of DNA integrity and the prevention of telomere shortening. Telomeres are the protective caps at the end of chromosomes, which shorten with each cell division and contribute to aging. NAD+ supplement may help preserve the length and function of telomeres and delay the aging process.