The Medical Advisor

Medically Reviewed by:   OneDayMD Editorial Team  | Written by:     Dr Frank Yap, MD  | Last Updated:   August  2026 Quick Answer The anti-aging supplements with the strongest human evidence are vitamin D3 (with K2 and magnesium), omega-3 fatty acids, creatine, glycine, and collagen peptides — each backed by large randomized trials tied to biological aging, mortality, or a specific hallmark of aging. Urolithin A, NAC/GlyNAC, and spermidine have promising but smaller human trial support. NMN, resveratrol, and CoQ10 are well-studied for safety and biomarkers but have not yet shown they extend human lifespan. A 2025 NIH-led study also overturned the idea that low taurine drives aging in humans — see Section 4. No supplement replaces diet, exercise, sleep, and a doctor's guidance. Can supplements reverse your age? Can you supplement your way out of aging? We dug into more than 1,000 research studies — including several major 2025 and 2...

Retatrutide is an investigational triple-agonist therapy that targets three metabolic hormone pathways, potentially enabling greater weight loss. In contrast, tirzepatide targets two (GLP-1 and GIP) and is FDA-approved, while semaglutide —the first of the three—targets a single pathway (GLP-1) and is also FDA-approved for weight management. The Weight Loss Revolution (2026 Update) Weight loss treatment has undergone a once-in-a-generation transformation . What started with GLP-1 drugs like semaglutide has now evolved into multi-receptor peptides capable of delivering 20–30% body weight loss—approaching bariatric surgery outcomes . ( Semaglutide vs Tirzepatide vs Retatrutide ) At the center of this revolution are three key players: Semaglutide (Ozempic, Wegovy) — first-generation GLP-1 Tirzepatide (Mounjaro, Zepbound) — dual agonist (GLP-1 + GIP) Retatrutide (next-gen) — triple agonist (GLP-1 + GIP + glucagon) The question is no longer “Do these drugs work?” It’s now: “Which one is...