Collagen supplements raised a gut satiety hormone by roughly 40% in a small trial — but half a dozen other appetite markers didn’t budge.
- 2025-07-21
- RCT
- The British journal of nutrition
This is among the first controlled tests of collagen on GLP-1, a hormone that signals fullness, but with only one short study in physically active women, it’s too early to say whether the effect is real or repeatable in a broader population.