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Excessive Consumption of Sugar: an Insatiable Drive for Reward

  • Nutrition and the Brain (J Nasser, Section Editor)
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Abstract

Purpose of Review

Eating behavior provides energy to ensure proper functioning of the organism. Reward aids in seeking foods that bring energy and pleasant taste, whose consumption is safe. As evidenced by the obesity “epidemic” which largely stems from overeating, reward becomes a detriment when palatable tastants are available in unlimited quantities. This review presents recent evidence on mechanisms underlying palatability-driven excessive consumption of sugar.

Recent Findings

Appetite for sugar is propelled by changes in the morphology and activity of the reward system reminiscent of addiction. Sugar intake also shifts the hunger-satiety continuum, facilitating initiation of consumption in the absence of energy needs and maintenance of feeding despite ingestion of large food loads that endanger homeostasis.

Summary

Ingestion of excessive amounts of sugar relies on triggering mechanisms that promote addictive-like behaviors, and on overriding neuroendocrine signals that protect internal milieu.

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Correspondence to Allen S. Levine.

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Pawel K. Olszewski, Erin L. Wood, Anica Klockars, and Allen S. Levine declare that they have no conflict of interest.

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Olszewski, P.K., Wood, E.L., Klockars, A. et al. Excessive Consumption of Sugar: an Insatiable Drive for Reward. Curr Nutr Rep 8, 120–128 (2019). https://doi.org/10.1007/s13668-019-0270-5

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