Changes in taste perception and eating behavior after bariatric surgery‐induced weight loss in women
Objective Roux‐en‐Y gastric bypass (RYGB) surgery causes greater weight loss than laparoscopic adjustable gastric banding (LAGB). We tested the hypothesis that RYGB has weight loss‐independent effects on taste perception, which influence eating behavior and contribute to the greater weight loss. Met...
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Published in | Obesity (Silver Spring, Md.) Vol. 22; no. 5; pp. E13 - E20 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
United States
Blackwell Publishing Ltd
01.05.2014
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Subjects | |
Online Access | Get full text |
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Summary: | Objective
Roux‐en‐Y gastric bypass (RYGB) surgery causes greater weight loss than laparoscopic adjustable gastric banding (LAGB). We tested the hypothesis that RYGB has weight loss‐independent effects on taste perception, which influence eating behavior and contribute to the greater weight loss.
Methods
Subjects were studied before and after ∼20% weight loss induced by RYGB (n = 17) or LAGB (n = 10). The following have been evaluated: taste sensitivity for sweet, salty and savory stimuli, sucrose and monosodium glutamate (MSG) preferences, sweetness palatability, eating behavior, and expression of taste‐related genes in biopsies of fungiform papillae.
Results
Weight loss induced by both procedures caused the same decrease in: preferred sucrose concentration (−12 ± 10%), perceived sweetness of sucrose (−7 ± 5%), cravings for sweets and fast‐foods (−22 ± 5%), influence of emotions (−27 ± 5%), and external food cues (−30 ± 4%) on eating behavior, and expression of α‐gustducin in fungiform papillae (all P values <0.05). RYGB, but not LAGB, shifted sweetness palatability from pleasant to unpleasant when repetitively tasting sucrose (P = 0.05). Neither procedure affected taste detection thresholds nor MSG preferences.
Conclusions
LAGB and RYGB cause similar alterations in eating behaviors, when weight loss is matched. These changes in eating behavior were not associated with changes in taste sensitivity, suggesting other, as yet unknown, mechanisms are involved. |
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Bibliography: | Conflict of Interest S.K. is a shareholder of Aspire Bariatrics and serves on the Scientific Advisory Board for NovoNordisk, Takeda Pharmaceuticals, and the Egg Nutrition Council. No other authors declare a conflict of interest. This study was supported by the National Institutes of Health (NIH) grants DK 37948, UL1 TR000448 (Clinical and Translational Sciences Award), sub‐award KL2 TR000450, and DK 56341 (Nutrition and Obesity Research Center), DK 60022. Funding agencies ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1930-7381 1930-739X |
DOI: | 10.1002/oby.20649 |