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Intake of high-intensity sweeteners alters the ability of sweet taste to signal caloric consequences: implications for the learned control of energy and body weight regulation. | LitMetric

AI Article Synopsis

  • Research indicates that noncaloric sweeteners might actually lead to weight gain instead of helping with weight loss, based on studies in both humans and animals.
  • The study used rats to demonstrate that consuming noncaloric sweeteners disrupts learned connections between sweet flavors and their calorie content, meaning the rats can't effectively regulate their food intake.
  • These findings suggest that noncaloric sweeteners could encourage overeating and weight gain by diminishing the link between sweet tastes and the actual calories consumed.

Article Abstract

Recent results from both human epidemiological and experimental studies with animals suggest that intake of noncaloric sweeteners may promote, rather than protect against, weight gain and other disturbances of energy regulation. However, without a viable mechanism to explain how consumption of noncaloric sweeteners can increase energy intake and body weight, the persuasiveness of such results has been limited. Using a rat model, the present research showed that intake of noncaloric sweeteners reduces the effectiveness of learned associations between sweet tastes and postingestive caloric outcomes (Experiment 1) and that interfering with this association may impair the ability of rats to regulate their intake of sweet, but not nonsweet, high-fat and high-calorie food (Experiment 2). The results support the hypothesis that consuming noncaloric sweeteners may promote excessive intake and body weight gain by weakening a predictive relationship between sweet taste and the caloric consequences of eating.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3412685PMC
http://dx.doi.org/10.1080/17470218.2011.552729DOI Listing

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