Roux-En-Y gastric bypass and sleeve gastrectomy does not affect food preferences when assessed by an ad libitum buffet meal

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BACKGROUND: Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG) lead to a reduction in energy intake. It is uncertain whether this reduction is simply due to eating smaller portions or if surgery changes food preferences towards less energy-dense food. Previous results rely on verbal reports, which may be prone to recall bias and underestimation of especially unhealthy foods.

METHODS: Using an ad libitum buffet meal targeting direct behavior, we investigated if RYGB and SG surgery leads to changes in food preferences. In addition, we assessed food preferences by a picture display test to explore differences between a method relying on verbal report and a method assessing direct behavior.

RESULTS: Forty-one subjects (BMI 45.0 ± 6.8 kg/m(2)) completed a visit pre- and 6 months post-RYGB (n = 31) and SG (n = 10). Mean BMI decreased with 11.7 ± 0.6 kg/m(2) and total energy intake at the buffet meal with 54% (4491 ± 208 kJ vs. 2083 ± 208 kJ, P <0.001), ± ≥ (34 (all 0.18). 65 8% 9%, and as categories: change chosen contrast, density did display energy following food from group high-fat, high-fat-savory, high-fat-sweet, however, in intake low-fat, low-fat-savory low-fat-savory, low-fat-sweet, more not often p="0.02).</p" picture post-surgery relative respectively. savory, showed surgery sweet, test that the vs. was well>

CONCLUSION: The reduction in energy intake after RYGB and SG surgery and the subsequent weight loss seems to be primarily related to a reduction in portion sizes and not by changes in food preferences towards less energy-dense foods. These results underline the necessity of investigating eating behavior by targeting direct behavior.

Original languageEnglish
JournalObesity Surgery
Issue number10
Pages (from-to)2599-2605
Number of pages7
Publication statusPublished - 2017

    Research areas

  • Journal Article

ID: 176620687