In recent years, NAD+ (nicotinamide adenine dinucleotide) has become one of the most discussed molecules in longevity and wellness research. Found in every living cell, NAD+ plays a critical role in energy production, DNA repair, and cellular health. Scientists are increasingly interested in how declining NAD+ levels may contribute to aging and age-related diseases. What Is NAD+? NAD+ is a coenzyme that helps cells convert nutrients into energy. Beyond its role in metabolism,