Measuring Satiety: Which Biomarkers Best Track the Feeling of Fullness
CCK, GLP-1, PYY, ghrelin, insulin, and glucose are the most validated physiological biomarkers of satiation (stopping eating) and satiety (staying full), with CCK and GLP-1 showing the strongest evidence.
Quick Facts
What This Study Found
CCK and GLP-1 are the most validated satiety biomarkers correlating with both subjective appetite ratings and actual food intake, with PYY, ghrelin, insulin, and glucose providing complementary information in multi-marker panels.
Key Numbers
How They Did This
Critical review of studies correlating physiological measures (gut peptides, metabolites, neural signals) with subjective appetite ratings and measured food intake in humans.
Why This Research Matters
Obesity drug development and nutrition research need reliable satiety biomarkers. This review identifies which measurements actually correlate with human appetite and which are just noise.
The Bigger Picture
Appetite is too complex for one measurement. The multi-marker approach reflects biological reality — and GLP-1's validation here foreshadowed its later success as an obesity drug target.
What This Study Doesn't Tell Us
Review of correlation studies. Correlation between a biomarker and satiety doesn't prove the biomarker drives satiety. Methodological differences between studies complicate comparisons.
Questions This Raises
- ?Should obesity clinical trials use multi-marker satiety panels?
- ?Can satiety biomarker profiles predict which patients respond to which obesity drugs?
- ?Does chronic obesity alter the biomarker-satiety relationship?
Trust & Context
- Key Stat:
- GLP-1 validated GLP-1 was validated as a reliable satiety biomarker in humans — foreshadowing its later success as the target for obesity blockbuster drugs like Ozempic
- Evidence Grade:
- Strong evidence from a critical review synthesizing multiple human appetite correlation studies.
- Study Age:
- Published in 2004. GLP-1's validation as a satiety biomarker here preceded its explosive success as an obesity drug target by over a decade.
- Original Title:
- Biomarkers of satiation and satiety.
- Published In:
- The American journal of clinical nutrition, 79(6), 946-61 (2004)
- Database ID:
- RPEP-00901
Evidence Hierarchy
Summarizes existing research on a topic.
What do these levels mean? →Frequently Asked Questions
Can a blood test measure how full you are?
Several markers track fullness: CCK and GLP-1 are the best validated. They rise after eating and correlate with both how full people say they feel and how much they actually eat next.
Is this why GLP-1 drugs work for weight loss?
Yes — GLP-1 was validated as a reliable satiety signal in this and similar reviews. Drugs that mimic GLP-1 (Ozempic, Wegovy) boost this fullness signal, reducing appetite and food intake.
Read More on RethinkPeptides
Cite This Study
https://rethinkpeptides.com/research/RPEP-00901APA
de Graaf, Cees; Blom, Wendy A M; Smeets, Paul A M; Stafleu, Annette; Hendriks, Henk F J. (2004). Biomarkers of satiation and satiety.. The American journal of clinical nutrition, 79(6), 946-61.
MLA
de Graaf, Cees, et al. "Biomarkers of satiation and satiety.." The American journal of clinical nutrition, 2004.
RethinkPeptides
RethinkPeptides Research Database. "Biomarkers of satiation and satiety." RPEP-00901. Retrieved from https://rethinkpeptides.com/research/de-2004-biomarkers-of-satiation-and
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkPeptides research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.