Summary
Skipping one meal daily activates sirtuins and autophagy without requiring extreme fasting - low glucose and insulin states trigger your longevity genes. NMN supplementation can roughly double blood NAD+ levels, supporting the cellular repair systems that deteriorate with age. Combine with aerobic and resistance training to preserve muscle mass and testosterone, and track HbA1c and CRP over years for real longevity signals.
Key Points
- The epigenetic information controlling gene expression accounts for roughly 80% of longevity outcomes, with DNA damage and stress causing progressive loss of cellular identity
- Skipping one meal daily activates sirtuins and reduces mTOR signaling, triggering autophagy and cellular repair mechanisms without requiring extreme restriction
- Low glucose and insulin levels activate sirtuin genes; NAD+ precursors like NMN can approximately double blood NAD levels and sustain protective defenses
- Aerobic and resistance training raises NAD levels and preserves muscle mass critical for maintaining testosterone and metabolic function with age
- Monitoring HbA1c, C-reactive protein, and blood glucose trends over years provides better predictive power for cardiovascular health and longevity
- Research demonstrates that fasting and NAD+ supplementation can restore fertility in aging female mice, suggesting broader cellular rejuvenation capacity
- Optimal protocols involve "pulsing" behaviors (alternating fasting, eating, supplementing) rather than constant interventions
Key Moments
NMN doubles blood NAD levels in about two weeks
David Sinclair reports that NMN at 1g/day doubles blood NAD levels within about two weeks based on measuring dozens of people.
"If you take NMN for about two weeks, you'll double, on average, double your NAD levels in the blood."
