Poor diet quality and postoperative time are independent risk factors for weight regain after Roux-en-Y gastric bypass

• Published in: Nutrition (Burbank, Los Angeles County, Calif.) Vol. 32; no. 11; pp. 1250 - 1253
• Main Authors: da Silva, Fernanda Bassan Lopes, MS.C, Gomes, Daniela Lopes, Ph.D, de Carvalho, Kênia Mara Baiocchi, Ph.D
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 01.11.2016; Elsevier Limited
• Subjects: Adult; Bariatric surgery; Carbohydrates; Counseling; Dairy products; Diet; Diet - adverse effects; Eating behavior; Exercise; Feeding Behavior; Female; Food; Food quality; Gastric Bypass - adverse effects; Gastroenterology and Hepatology; Gastrointestinal surgery; Humans; Male; Medical records; Middle Aged; Multivariate Analysis; Nutrition research; Nutritional assessment; Obesity, Morbid - pathology; Obesity, Morbid - surgery; Oils & fats; Postoperative Period; Quality; Retrospective Studies; Risk Factors; Studies; Time Factors; Treatment Failure; Variables; Vomiting; Weight control; Weight Gain; Young Adult; Nutritional assessment; Postoperative period; Food quality; Eating behavior; Bariatric surgery
• ISSN: 0899-9007; 1873-1244
• DOI: 10.1016/j.nut.2016.01.018

Abstract Objective In this study, multivariate analyses was used to investigate factors associated with weight regain long after Roux-en-Y gastric bypass. Methods This retrospective study comprised 80 patients (88.8% female) with at least 24 mo of postoperative time. Weight regain was defined as an increase of at least 10% of the lowest postoperative weight. The following data were collected: demographic characteristics, eating behavior, food intake, diet quality measured by the Healthy Eating Index, level of physical activity, follow-up visit attendance, anthropometric history, and postoperative time. Multivariate logistic regression generated a controlled analysis, followed by calculation of the odds ratio (OR). Results The mean postoperative time was 47.0 ± 18.0 mo. The mean pre- and postoperative body mass indexes were 49.8 ± 9.3 kg/m2 and 33.6 ± 7.2 kg/m2 , respectively. Despite satisfactory postoperative weight loss, 23.7% of the patients regained weight. After controlling for confounders, only postoperative time (OR 1.08; P  < 0.01) and Healthy Eating Index (OR 0.95; P  = 0.04) remained associated with weight regain. Conclusion Patients with long-term obesity and poor diet quality were at high risk of weight regain. These results suggest the need of nutritional monitoring during the late postoperative period, paying special attention to eating patterns.