Ludwig · The American journal of clinical nutrition 2021 · narrative review / theoretical framework · n=?

The carbohydrate-insulin model: a physiological perspective on the obesity pandemic.

Cited 296 times in the scientific literature.

Level 5 - mechanism / opinion, no new human data

Narrative review and theoretical perspective with no new empirical data.

PubMed 34515299 · doi:10.1093/ajcn/nqab270 · record verified 2026-08-27

What was done

Conceptual review and perspective evaluating the conventional energy balance model versus the carbohydrate-insulin model of obesity based on physiological mechanisms.

What was found

The abstract reports no numerical data or empirical findings. It outlines the theoretical hypothesis that hormonal responses to high-glycemic-load diets drive fat deposition, which subsequently causes positive energy balance and increased intake.

Why it matters

It provides a mechanistic alternative to the standard calorie-focused paradigm for obesity, suggesting that altering dietary composition rather than simply reducing calories could better target the biological drivers of weight gain.

Limits

This is a theoretical perspective paper containing no primary data, systematic review methodology, or empirical testing. The proposed hypotheses remain to be validated against conventional models in rigorous clinical trials.

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