Key Highlights
Medicine · Neurology
A critical review examines the methodological use and frequent misuse of nonnutritive sweeteners (NNS) in rodent studies of sugar appetite and reward, directly questioning the translational validity of commonly employed experimental paradigms. The authors, including Sclafani, Ackroff, and Glendinning, systematically demonstrate that NNS do not engage the same postingestive appetitive and reward circuits as caloric sugars, leading to potential misinterpretations of neural mechanisms governing sugar-seeking behavior. For a neuroscientist developing preclinical models of placebo analgesia and chronic pain, this work is directly relevant because it underscores the importance of rigorously controlling for the sensory and metabolic properties of stimuli when probing reward pathways, a principle equally critical to studies of expectation and pain modulation.
Novelty: 85%
Rigor: 92%
Significance: 88%
Validity: 95%
Clarity: 90%
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