NAD+ and Cellular Energy

NAD+ has become one of the most talked-about molecules in longevity, which means it is also one of the most oversold. Here is the grounded version.

Among the molecules that have drawn intense attention in longevity science, few rival NAD+. Scientists have known about it for over a century, long viewing it as a quiet workhorse of cellular metabolism. That perception has changed dramatically. IN PLAIN TERMS If mitochondria are the cell's power plant, NAD+ is part of the fuel and wiring that lets that plant run. Every organ depends on it. Every tissue uses it. When levels decline, the whole system runs at less than full capacity. NAD+ now sits at the center of active research into metabolism, mitochondrial function, cellular repair, and aging. Levels tend to decline as we age, and supporting them has become a significant area of interest in longevity medicine. As with everything in this book, the framing matters: this is an area of genuine promise and active study, not a proven fountain of youth. But it is a meaningful part of the broader regenerative picture, and one reason cellular energy is a recurring theme in serious longevity care.