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Supplement: The State of the Science on Dietary Sweeteners Containing Fructose

Fructose and Satiety^1,2

Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205

A role for the increased intake of dietary fructose in general and high-fructose corn syrup (HFCS) in particular in the current obesity epidemic has been proposed. Consumed fructose and glucose have different rates of gastric emptying, are differentially absorbed from the gastrointestinal tract, result in different endocrine profiles, and have different metabolic fates, providing multiple opportunities for the 2 saccharides to differentially affect food intake. The consequences of fructose and glucose on eating have been studied under a variety of experimental situations in both model systems and man. The results have been inconsistent, and the particular findings appear to depend on the timing of saccharide administration or ingestion relative to a test meal situation, whether the saccharides are administered as pure sugars or as components of a dietary preload, and the overall volume of the preload. These factors rather than intrinsic differences in the saccharides' ability to induce satiety appear to carry many of the differential effects on food intake that have been found. On balance, the case for fructose being less satiating than glucose or HFCS being less satiating than sucrose is not compelling.

^* To whom correspondence should be addressed. E-mail: tmoran{at}jhmi.edu.

Published online 29 April 2009.

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