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✱ Cellular Health · 7 min read

Understanding NAD+ and Cellular Energy

How a single coenzyme sits at the center of energy production, DNA repair and aging research.

CelebrityRx Editorial Team ·

What NAD+ does

NAD+ is a coenzyme that carries electrons between metabolic reactions. Converted to NADH, it delivers those electrons to the mitochondrial electron transport chain, which powers ATP synthesis.

Why levels matter

Enzymes such as PARPs and sirtuins consume NAD+ while repairing DNA and regulating stress responses. Studies in animals and people show NAD+ declines in some tissues with age.

What the evidence shows

Human trials have mostly tested oral precursors like nicotinamide riboside. They reliably raise blood NAD+ but have shown mixed effects on health outcomes. Evidence for injections is thinner still.

Sources

  1. Covarrubias AJ et al. NAD+ metabolism and its roles in cellular processes during ageing. Nat Rev Mol Cell Biol. 2021.
  2. NIH Office of Dietary Supplements — Niacin fact sheet

This article is for general education and is not medical advice. Talk to a qualified healthcare professional before starting, stopping or changing any treatment.