Protein & Nutrition Blog – Marmels

Protein and Collagen on Glucagon-Like Peptide-1 (GLP1) Drugs

Protein & Nutrition Blog – Marmels

Protein and Collagen on Glucagon-Like Peptide-1 (GLP1) Drugs

by Mo Mandegar, PhD on Aug 24 2026
Research from 2025 and 2026 found people taking a glucagon-likepeptide-1 (GLP-1) medication averaging 0.6 grams of protein perkilogram of body weight per day, less than half current guidance,with 88 percent falling short. Protein and collagen both come up inthis conversation, but they do different jobs and the evidence is notequally strong. Here is what the trial data shows about lean mass,where collagen honestly fits, and what to eat when appetite is capped.