NAD+ is a key molecule that drives life at the cellular level. It supports energy production, DNA repair, and communication between cells. Understanding its function helps explain why NAD+ maintenance is central to longevity science.
The Core Role of NAD+
NAD+ participates in over 500 enzymatic reactions related to metabolism and repair. It enables the conversion of nutrients into energy, assists in cell signaling, and activates longevity-related enzymes that protect against cellular damage.
Why NAD+ Declines with Age
Aging, chronic inflammation, and environmental toxins increase NAD+ consumption and reduce its synthesis. This leads to mitochondrial inefficiency, fatigue, and reduced repair capacity.
How to Support NAD+ Levels
- Exercise regularly to stimulate mitochondrial biogenesis
- Get quality sleep to restore metabolic balance
- Eat a nutrient-rich diet containing tryptophan, niacin, and antioxidants
- Supplement with NMN or NR to support NAD+ biosynthesis
Final Takeaway
NAD+ is fundamental to energy metabolism and repair. Sustaining its levels through lifestyle and supplementation helps maintain vitality, focus, and healthy aging.


