Does collagen cause weight gain?

No. Collagen is low in calories and virtually fat- and carb-free. Because it is a protein, it may actually help with weight management by increasing feelings of fullness (satiety), making it easier to stick to a physician-supervised nutrition plan.

About Whole Body Collagen Benefits: A Guide for Protein and Skin Health

This answer is drawn from the full physician-reviewed guide to Whole Body Collagen Benefits: A Guide for Protein and Skin Health on the GOAL.MD Vitamin Shop learning hub. Read the full guide for mechanism of action, evidence, dosing, safety, and interactions.

Medically reviewed by Dr. Michael Mimlitz, MD (NPI 1508891870), Chief Physician of GOAL.MD. Physician-supervised telehealth. More at goal.md/answers.