
Nicotinamide Adenine Dinucleotide
A critical coenzyme found in every cell of your body. NAD+ declines with age — and restoring it has become one of the most researched areas in longevity science.
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Imagine your cells as factories. NAD+ (Nicotinamide Adenine Dinucleotide) is the fuel that keeps those factories running. It's a coenzyme — a molecule that helps enzymes do their jobs — and it's involved in hundreds of metabolic reactions throughout your body.
The problem? NAD+ levels decline naturally as we age. By the time we're 50, we may have less than half the NAD+ we had at 20. Researchers have linked this decline to many hallmarks of aging — reduced energy, declining cognitive function, slower recovery, and increased susceptibility to metabolic dysfunction.
This has made NAD+ supplementation and therapy one of the most researched areas in longevity medicine. Scientists like Dr. David Sinclair at Harvard have dedicated significant research efforts to understanding how restoring NAD+ levels may support healthspan and lifespan.
NAD+ is essential to the electron transport chain — the process by which your mitochondria generate ATP (cellular energy). Without adequate NAD+, this process slows, reducing the energy available to every cell in your body.
NAD+ is a required cofactor for sirtuins — a family of proteins often called "longevity genes." Sirtuins regulate gene expression, DNA repair, inflammation, and stress responses. Higher NAD+ levels have been associated with increased sirtuin activity in research models.
PARP enzymes consume NAD+ to repair damaged DNA. As DNA damage accumulates with age, PARP activity increases, depleting NAD+ further. Maintaining NAD+ levels may support the body's DNA repair capacity.
Beyond energy production, NAD+ participates in cellular signaling pathways that regulate inflammation, stress responses, circadian rhythms, and apoptosis — all of which have implications for healthy aging.
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