What science knows
It is involved in cellular energy, redox reactions, mitochondria, and signaling. Precursors such as NR and NMN can change NAD-related biomarkers in humans.
Module
What NAD+ is
NAD+ means nicotinamide adenine dinucleotide. It is a molecule of metabolism, not a promise of more years.
Vitamin B3 and precursors
NR / NMN
NAD+
Cellular processes
What we still do not know
A clinical anti-aging benefit, or an extension of human life, has not been demonstrated. Animal results are not enough for that sentence.