NAD+ — nicotinamide adenine dinucleotide — is often called the body's cellular energy currency.
It's the cofactor behind hundreds of enzymatic reactions, the spark behind ATP production, and one of the most studied molecules in longevity science today. The challenge?
NAD+ levels decline naturally and significantly as we age. By your 40s, you may have roughly half the NAD+ you had in your 20s.
That gradual depletion shows up as fatigue that doesn't resolve with rest, slower recovery, brain fog, and a general sense that your body isn't running the way it once did.
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