Protein appetite as an integrator in the obesity system: the protein leverage hypothesis.
Level 5 - mechanism / opinion, no new human data
Narrative review and theoretical synthesis without systematic review methodology
PubMed 37661737 · doi:10.1098/rstb.2022.0212
What was done
The authors synthesized mechanistic, experimental, and observational evidence within the "nutritional geometry" ecological framework to evaluate the protein leverage hypothesis (PLH) as an integrative model of obesity.
What was found
The abstract reports no numerical data or effect sizes. It states qualitatively that humans regulate protein intake more strictly than non-protein energy, meaning dilution of protein in modern processed foods leads to compensatory increases in total food and energy intake to reach protein requirements.
Why it matters
This work outlines a multi-nutrient framework that integrates competitive dietary theories of obesity by focusing on how protein appetite drives overconsumption of energy-dense foods.
Limits
The abstract describes a narrative review and theoretical model rather than a systematic review or meta-analysis, reporting no quantitative effect sizes, search criteria, or specific sample sizes.
Cited by
- supports The protein leverage hypothesis posits that the human body maintains appetite and drives food-seeking behavior until an adequate target intake of dietary protein is achieved.