Abstract

Testing the validity of “negative-calorie” foods with a reptile model

Highlights

  • A dieting and weight loss scheme that has populated the internet, social media, and dieting and nutrition books is a diet that includes “negative-calorie” foods [1,2,3,4,5,6]

  • We used the omnivorous bearded dragon and compared the energy of their celery meals to that lost to SDA, feces, and urate to determine whether lizards experienced a net loss or gain in energy from these meals

  • Inherently low in energy and with a relatively high fiber content, the celery meals did generate a net gain in energy for the lizards

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Summary

Introduction

A dieting and weight loss scheme that has populated the internet, social media, and dieting and nutrition books is a diet that includes “negative-calorie” foods [1,2,3,4,5,6]. These are foods, in theory, for which more energy is expended in their digestion, assimilation, and nutrient storage than is gained. When accounting for the combined energy expended on digestion and assimilation and lost to feces and urine, it becomes more theoretically plausible for celery consumption to result in an energy deficit and celery to be a valid “negative-calorie” food [14]

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