Harvard Doctor reveals #1 Cause of Aging You've Never Heard Of | Dr. Andrew Salzman
Dr. Josh AxePublished on June 25, 2026
Summary authored by editor@wellifi.com
TLDR Summary
Aging is more about the body's ability to repair itself than simply wearing down. Maintaining adequate NAD+ levels through diet and supplements is essential for promoting cellular health, reducing inflammation, and supporting longevity.
Key Points
- Aging is a defect in repair rather than simply wearing out.
- NAD+ is crucial for energy production and cellular repair.
- Chronic inflammation can negatively impact NAD+ levels.
- Dietary sources and supplements like NMN and creatine can boost NAD+ levels.
- Gut health plays a vital role in reducing inflammation and supporting overall health.
The Science of Aging: Understanding NAD+ and Cellular Repair
Aging is often viewed as a process of wearing out, but leading experts suggest that it is more accurately described as a defect in repair. In this enlightening episode of the Dr. Josh Axe Show, Dr. Andrew Salsman, a Harvard-trained ICU physician and pioneer in aging research, discusses the critical role of NAD+ (Nicotinamide Adenine Dinucleotide) in maintaining cellular health and promoting longevity.
The Concept of Aging
Dr. Salsman challenges the conventional wisdom that aging is merely a result of deterioration. He proposes that we experience continuous damage to our cells, but our bodies are also engaged in a constant process of repair. Each day, our bodies sustain damage, yet we often overlook this dynamic process of healing.
The Central Role of NAD+
NAD+ is described as the centerpiece of biology, vital for energy production and numerous cellular functions. Dr. Salsman emphasizes that maintaining adequate NAD+ levels is crucial for efficient cellular energy production and DNA repair. As we age, NAD+ levels decline, leading to decreased cellular energy and repair capacity.
Inflammation and its Impact
One of the key takeaways from the discussion is the importance of reducing inflammation. Chronic inflammation can activate enzymes like PARP, which consume NAD+. Therefore, maintaining a healthy gut and minimizing inflammation are essential strategies for preserving NAD+ levels and promoting health.
Practical Steps to Boost NAD+
- Dietary Sources: Incorporate foods rich in niacin (vitamin B3), such as meat, fish, and whole grains.
- Supplements: Consider supplements like NMN (Nicotinamide Mononucleotide) and NR (Nicotinamide Riboside) to boost NAD+ levels.
- Creatine Supplementation: Creatine not only supports energy production but also plays a vital role in cellular recovery and muscle function.
- Gut Health: Focus on a diet that promotes gut health to prevent leaky gut syndrome, which can exacerbate inflammation.
- Exercise: Regular physical activity can increase mitochondrial density and support overall metabolic health.
The Connection Between NAD+, Creatine, and Health
Dr. Salsman explains how NAD+ and creatine work together to support cellular energy production. Notably, creatine serves as a distribution system for ATP, the energy currency of the cell, ensuring that energy reaches where it is needed most. This relationship is crucial for maintaining cognitive function, muscle strength, and overall vitality.
Conclusion
As we continue to explore the science of aging, understanding the mechanisms behind cellular repair and energy production becomes increasingly important. By focusing on reducing inflammation, supporting gut health, and supplementing with NAD+ precursors and creatine, we can potentially enhance our health span and longevity.
If you want to delve deeper into Dr. Salsman’s research or learn more about NAD+ and its benefits, visit Wonderfield.