“Longevity genes” called sirtuins help you live a longer, healthier life by detecting errors and fixing them.  Sirtuins need NAD (nicotinamide adenine dinucleotide) to function.  We lose NAD in the body as we age.  Nicotinamide mononucleotide (“NMN”) enhances NAD production, supporting levels usually found only in youth.  In animal studies, NMN has been shown to be a neuroprotective and anti-aging agent.  Multiple human trials are currently underway.  Even at very high doses, no toxicity has been detected.  The recommended dosage is 8mg per kilogram of body weight.