Are The Anti-aging Promises of Nicotinimide Riboside (NAD) Worth The Money? - Will Brink - NAD is one of the most hyped anti-aging supplement of the current day. It promises to literally reverse aging, improve cognition, stave off some neuro-diseases and much more. In fact its so popular that the company that owns the patent threatened to pull it as a raw material from other manufacturers. So does it live up to the hype?