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Changes in taste perception and eating behavior after bariatric surgery‐induced weight loss in women
Author(s) -
Pepino Marta Yanina,
Bradley David,
Eagon J. Christopher,
Sullivan Shelby,
Abumrad Nada A.,
Klein Samuel
Publication year - 2014
Publication title -
obesity
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.438
H-Index - 199
eISSN - 1930-739X
pISSN - 1930-7381
DOI - 10.1002/oby.20649
Subject(s) - sweetness , taste , palatability , weight loss , medicine , wine tasting , eating behavior , taste bud , obesity , food science , psychology , chemistry , pathology , wine
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.