ArticleEuropean journal of clinical nutrition2013
Decreased energy density and changes in food selection following Roux-en-Y gastric bypass.
Article in European journal of clinical nutrition, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers, 5 of them syntheses that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
55 citing papers in PubMed, 5 syntheses or guidelines pooled it.
- The Role of Dietary Intake in the Weight Loss Outcomes of Roux-en-Y Gastric Bypass and Sleeve Gastrectomy: A Systematic Review and Meta-analysis.Obesity surgery · 2024Pooled it
- Body composition changes at 12 months following different surgical weight loss interventions in adults with obesity: A systematic review and meta-analysis of randomized control trials.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2022Pooled it
- Methodological issues in assessing change in dietary intake and appetite following gastric bypass surgery: A systematic review.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2021Pooled it
- The Relationship Between Bariatric Surgery and Diet Quality: a Systematic Review.Obesity surgery · 2020Pooled it
- Comparison of Energy and Food Intake Between Gastric Bypass and Sleeve Gastrectomy: a Meta-analysis and Systematic Review.Obesity surgery · 2019Pooled it
- Energy and Micronutrient Intake One Year After Sleeve Gastrectomy Versus Roux-en-Y Gastric Bypass: A Substudy of the Bypass Equipoise Sleeve Trial.Obesity surgery · 2026Trial
- Tripeptide gut hormone infusion does not alter food preferences or sweet taste function in volunteers with obesity and prediabetes/diabetes but promotes restraint eating: A secondary analysis of a randomized single-blind placebo-controlled study.Diabetes, obesity & metabolism · 2023Trial
- Roux-En-Y Gastric Bypass and Sleeve Gastrectomy Does Not Affect Food Preferences When Assessed by an Ad libitum Buffet Meal.Obesity surgery · 2017Trial
- Postoperative Changes in Eating Behavior After Sleeve Gastrectomy are Associated With IL-10 Independent of Anthropometric Changes.Obesity surgery · 2026Article
- Changes in Hedonic Hunger and Problematic Eating Behaviors Following Bariatric Surgery: A Comparative Study of Roux-en-Y Gastric Bypass Versus Sleeve Gastrectomy.Healthcare (Basel, Switzerland) · 2026Article
- Increased alcohol intake and alcohol use disorder following bariatric surgery: potential mechanisms.Physiology & behavior · 2025Review
- Dietary Habits, Obesity, and Bariatric Surgery: A Review of Impact and Interventions.Nutrients · 2025Review
- Changes in Food Preferences Before and After Intragastric Balloon Placement.Obesity surgery · 2024Article
- Patients' Perspectives on Dietary Patterns and Eating Behaviors During Weight Regain After Gastric Bypass Surgery.Obesity surgery · 2023Article
- Weight loss to disrupt type 2 diabetes.Diabetology international · 2023Review
- Food preferences after bariatric surgery: a review update.Internal and emergency medicine · 2023Review
- Regulation of body weight: Lessons learned from bariatric surgery.Molecular metabolism · 2023Review
- Food Intake Following Gastric Bypass Surgery: Patients Eat Less but Do Not Eat Differently.The Journal of nutrition · 2022Article
- The Neural Code for Taste in the Nucleus of the Solitary Tract of Rats with Obesity Following Roux-En-Y Gastric Bypass Surgery.Nutrients · 2022Article
- Oromotor and somatic taste reactivity during sucrose meals reveals internal state and stimulus palatability after gastric bypass in rats.American journal of physiology. Regulatory, integrative and comparative physiology · 2022Article
Corrections and comments
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND/
objectivesThe main objective was to test the hypothesis that dietary energy density (DED) decreases after Roux-en-Y gastric bypass (gastric bypass). SUBJECTS/
methodsA total of 43 patients (31 women and 12 men) aged 43 (s.d. 10) years, with body mass index (BMI) 44.3 kg/m(2) (4.9), were assessed preoperatively at 6 weeks and 1 and 2 years after gastric bypass. Self-reported energy intake (EI), food weight (FW) and food choice were assessed using a dietary questionnaire. DED was calculated by dividing EI by FW (kcal/g). Number of dropouts was 4 of 203 visits.
resultsPercent weight loss (%WL) was 13.5% at 6 weeks, 30.7% at 1 year and 31.8% at 2 years post surgery (P<0.001 for all). EI decreased from 2990 to 1774, 2131 and 2425 kcal after 6 weeks and 1 and 2 years postoperatively, respectively (P<0.001 at all time points). FW changed from 2844 to 1870 g/day at 6 weeks (P<0.001) and 2416 g/day after 1 year (P<0.05), but was not significantly different from baseline 2 years postoperatively (2602 g/day, P=0.105). DED decreased from 1.07 to 0.78 kcal/g at 6 weeks (P<0.001) and 0.90 kcal/g (P<0.001) and 0.96 kcal/g (P=0.001) after 1 and 2 years, respectively. All statistical comparisons were made from baseline. There was no correlation between changes in DED and %WL, neither after 1 year (r=-0.215; P=0.183) nor after 2 years (r=-0.046; P=0.775) post surgery.
conclusionsBesides substantial reduction in EI and large variation in FW, patients reported decreased DED over 2 years following gastric bypass. Despite lack of association between the reduction in DED and percentage weight loss, changes in food choice were overall nutritionally beneficial.
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Registered trials
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