Protein, fat, carbohydrate, and fiber each trigger distinct patterns of gut peptide release (GLP-1, PYY, CCK, ghrelin, GIP), with protein producing the strongest satiety signal through the most diverse peptide response.
Key findingDifferent macronutrients trigger distinct gut peptide profiles: protein produces the strongest and most diverse satiety peptide response (GLP-1, PYY,
What the researchers found
Different macronutrients trigger distinct gut peptide profiles: protein produces the strongest and most diverse satiety peptide response (GLP-1, PYY, CCK); fat strongly triggers CCK/GLP-1; carbohydrate mainly GIP/insulin; fiber enhances GLP-1/PYY through fermentation — macronutrient-specific appetite pharmacology.
Why it matters
Relevant for neuropeptides, glp-1, weight-loss.
How the study worked
review study.
What this study cannot tell us
See abstract.
How to read the evidence
moderate evidence.
When this study was published
Published in 2008.
The bigger picture
Advances peptide research.
Questions still open
- Further research needed.
- Clinical translation to evaluate.
Common questions
What was studied?
What was found?
Read the original research
Effect of protein, fat, carbohydrate and fibre on gastrointestinal peptide release in humans.
Regulatory peptides, 149(1-3), 70-8
Citation
Karhunen, L J; Juvonen, K R; Huotari, A; Purhonen, A K; Herzig, K H. (2008). Effect of protein, fat, carbohydrate and fibre on gastrointestinal peptide release in humans.. Regulatory peptides, 149(1-3), 70-8. https://doi.org/10.1016/j.regpep.2007.10.008