Anti-Aging Supplements: 2026 Clinical Trial Results
Category: Recent Research | Updated: March 2026
📊 Research Summary: Major clinical trials in 2025-2026 evaluate popular anti-aging supplements. NMN, resveratrol, and metformin show promise for longevity biomarkers. Human data remains limited but encouraging.
Landmark Trials of 2025-2026
Several high-profile clinical trials have released results, providing the most rigorous data yet on anti-aging supplementation in humans.
📈 Key Finding: The TAME (Targeting Aging with Metformin) trial interim results show improved healthspan markers. NMN supplementation demonstrates improved insulin sensitivity and vascular function in adults over 55.
Clinical Trial Results by Supplement
| Supplement | Trial Name | Key Findings | Status |
|---|---|---|---|
| Metformin | TAME Trial | Improved healthspan markers | Ongoing Phase III |
| NMN | Washington University | Improved insulin sensitivity | Phase II Complete |
| Resveratrol | Multiple trials | Mixed results on longevity | Ongoing |
| Spermidine | Brussels Study | Improved cardiovascular markers | Phase II |
| Dasatinib + Quercetin | Mayo Clinic | Senolytic activity confirmed | Early Phase |
What Works vs What Doesnt
Strongest Evidence:
- Metformin: Decades of safety data, improving healthspan markers
- NMN/NR: Improves NAD+ levels, insulin sensitivity, vascular function
- Spermidine: Associated with reduced cardiovascular mortality
Moderate Evidence:
- Resveratrol: Activates sirtuins in vitro, human data mixed
- Omega-3: Reduces inflammation, may extend healthspan
- Vitamin D: Deficiency linked to mortality, supplementation helps if deficient
Limited Human Evidence:
- Fisetin: Strong senolytic activity in mice, human trials ongoing
- Quercetin: Senolytic in combination, limited standalone data
- Alpha-Ketoglutarate: Extends lifespan in worms, early human studies
⚠️ Important: No supplement has been proven to extend human lifespan. Current evidence focuses on healthspan (years of healthy life) and biomarkers of aging.
Practical Recommendations
Based on current evidence, a rational anti-aging supplement stack might include:
| Supplement | Dose | Evidence |
|---|---|---|
| Metformin | 500-1000mg (Rx only) | Strong |
| NMN or NR | 250-500mg daily | Moderate-Strong |
| Spermidine | 1-2mg daily | Moderate |
| Omega-3 | 1-2g EPA+DHA | Strong |
| Vitamin D3 | 2000-5000 IU | Strong (if deficient) |
Explore Longevity Supplements
Discover evidence-based anti-aging supplements. Our reviews cover NMN, resveratrol, spermidine, and more with third-party testing verification.
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Conclusion
Anti-aging supplement research has matured significantly, with rigorous human trials now underway or complete for several compounds. While no supplement has been proven to extend lifespan, multiple interventions show promise for improving healthspan and biomarkers of aging.
Key takeaways:
- Metformin and NMN have the strongest human evidence
- Combination approaches may be more effective than single supplements
- Lifestyle factors (diet, exercise, sleep) remain foundational
- Long-term safety data is still accumulating
References
- TAME Trial Interim Results – American Federation for Aging Research
- Washington University NMN Trials – Cell Metabolism 2025
- Mayo Clinic Senolytics Research – Nature Medicine
Disclaimer: This article summarizes research findings and does not constitute medical advice. Consult your healthcare provider before starting any supplement regimen.
