NAD+ Supplements in 2026: Do NMN and NR Actually Slow Aging?

NMN, NR, and IV NAD therapy are a $2B industry. Here is what 2026 human trials actually demonstrate — and what they do not.

The NAD+ Hype, Reviewed

NAD+ (nicotinamide adenine dinucleotide) drives mitochondrial energy production and falls 50% by age 60. Supplementing precursors (NMN, NR) raises blood NAD+ levels — but human evidence for anti-aging effects remains modest.

What 2026 Trials Actually Show

Outcome	Evidence
Raises blood NAD+	✅ Confirmed (40-60%)
Improves grip strength	⚠ Mixed
Reduces inflammation markers	✅ Modest
Improves VO2 max	⚠ Small studies only
Extends human lifespan	❌ No data

Reasonable Use

If you choose to supplement: NMN 500 mg/day or NR 300 mg/day from a reputable, third-party-tested brand. Cycle for 3-month assessments.

Better Proven Longevity Interventions

• Zone 2 cardio (see our guide)
• Strength training
• Mediterranean diet (details)
• Adequate sleep (sleep and immunity)
• Treating sleep apnea with CPAP

Spend on what works first; supplements are a rounding error compared to these.