Essentials: The Biology of Slowing & Reversing Aging | Dr. David Sinclair

What It Covers

Dr. David Sinclair explains aging as a disease caused by epigenetic information loss, detailing how fasting, NAD boosters, and lifestyle interventions activate longevity genes like sirtuins to slow and potentially reverse biological aging processes.

Key Questions Answered

• •Epigenetic aging mechanism: Aging results from scratched DNA packaging that causes cells to lose identity and play wrong genetic songs. This epigenome degradation accounts for 80% of longevity outcomes versus 20% from genetics, making it the primary controllable aging factor.
• •Meal timing protocol: Skip one meal daily at day's beginning or end to extend overnight fasting period. First two to three weeks produce hunger and habit challenges, but afterward the body adapts. Monthly forty-eight to seventy-two hour fasts activate deeper cellular cleanup through chaperone-mediated autophagy.
• •NMN supplementation effects: Taking one to two grams of NMN daily doubles blood NAD levels within two weeks across dozens of tested individuals. Elevated NAD activates sirtuin longevity genes that repair cells, improve insulin sensitivity, and maintain energy levels in aging bodies.
• •Exercise and growth balance: Pulse fasting periods with eating and supplement timing rather than constant supplementation. Build muscle through strategic exercise without excessive growth hormone or leucine supplementation, which provide short-term gains but accelerate long-term aging through mTOR pathway activation.