The Medical Advisor

GLP-1 vs GLP-2 : Both are glucagon-like peptides made from the same proglucagon precursor, but they are not interchangeable hormones. GLP-1 has become a major metabolic drug target because it can reduce appetite, improve glucose control and promote weight loss. GLP-2 is much more strongly associated with intestinal growth, nutrient absorption, barrier function and adaptation. That difference is now attracting attention as researchers explore whether combining GLP-1 and GLP-2 receptor activity could create a new approach to obesity and metabolic disease. Bottom line: GLP-1 is primarily a metabolic and appetite-regulating signal ; GLP-2 is primarily an intestinal growth and adaptation signal . GLP-2 is not simply a stronger or newer version of GLP-1. The two hormones have distinct receptors, biological actions and established clinical applications. Updated: September 20, 2026 In this guide What are GLP-1 and GLP-2? GLP-1 vs GLP-2: side-by-side comparison How GLP-1 affe...

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...