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NAD+ Decline Across the Lifespan
Nicotinamide adenine dinucleotide (NAD+) is a coenzyme essential for energy metabolism, DNA repair, and sirtuin activity. Levels fall ~50% by age 60 in most tissues – and this decline is now considered a primary driver of multiple hallmarks of aging. Hover the legend to isolate individual tissue curves.
NAD+ Levels Across the Lifespan
Relative tissue NAD+ concentration vs age 20 baseline (100%)
~50%
decline by age 60
Across most tissues
2–3×
NAD+ boost from NMN/NR
Demonstrated in clinical trials
1.5×
slower decline with exercise
Zone 2 cardio especially
NAD+-Boosting Interventions in the Atlas