Eric Verdin, M.D., and Peter Attia, M.D., discuss the controversy surrounding NAD+ (nicotinamide adenine dinucleotide), the best method for replenishing NAD+, and more.


Discover proven anti-aging and longevity drugs that extend lifespan. Lifestyle, nutrition, sleep, exercise, and toxin avoidance, all in the best and most comprehensive guide.

Explore the most effective longevity interventions—nutrition, fasting, sleep, exercise, and mouse-tested drugs that extend lifespan in real studies.

Longevity Prescription: Diet, Fasting, and Proven Anti-Aging Strategies

Aging &amp; Longevity

Model: Healthy adults between 21 and 79 years of age 
Dosage: 395 mg/kg of bodyweight of (R)-3-hydroxybutyl-(R)-3-hydroxybutyrate monoester (𝛽-hydroxybutyrate ketones) diluted in water and administered once

New Study Finds Midlife May Be a Critical Window to Prevent Brain Aging

A new study suggests that supplementing with ketones—molecules the body can use for energy when lacking sugars—prevents cognitive aging when administered in people’s 40s and 50s.

(The study’s principal investigator, Dr. Lilianne R. Mujica-Parodi | Stony Brook University News)

Based on age-related destabilized brain signaling, a new study suggests a critical midlife window where metabolic interventions may stabilize brain signaling.

Brain &amp; Neurons

Model: Two-month-old male C57BL/6J mice fed a high-fat diet to induce obesity 
Dosage: 400 mg/kg/day of NR for eight weeks

Scientists find that NR (nicotinamide riboside) supplementation preserves brown fat tissue in mice, reducing their body weight and maintaining the health of their mitochondria. 

An artist’s rendering of a brown fat cell (image: Alioui Ma/shutterstock.com). 

Diabetes &amp; Obesity

Participants: Physically active and healthy older adults 
Dosage: 1 gram of omega-3s (330 mg EPA plus 660 mg DHA) per day, 2,000 IU of vitamin D per day, and 30 minutes of strength training exercises three times per week

While omega-3 supplementation slows biological aging, adding vitamin D and exercise further slows biological aging.

The “father of aging clocks” and senior study author Steve Horvath, PhD, of Harvard University (Image: quantamagazine.org). 

Search Result: age acceleration

Top Aging Expert & Peter Attia Discuss NAD+ Precursors: Taking NMN and NR Together

Longevity Prescription

New Study Finds Midlife May Be a Critical Window to Prevent Brain Aging

NAD+ Precursor NR Preserves Longevity-Promoting Cells, New Study Shows

Harvard Study Reveals that Omega-3s, Vitamin D, and Exercise Additively Slow Biological Aging