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Children 2018, 5(9), 116; https://doi.org/10.3390/children5090116

Weight Loss Medications in Young Adults after Bariatric Surgery for Weight Regain or Inadequate Weight Loss: A Multi-Center Study

1
Adolescent Neuroendocrine Unit, Massachusetts General Hospital, Boston, MA 02114, USA
2
Department of Surgery-Urology, Brigham and Women’s Hospital, Boston, MA 02115, USA
3
Harvard Medical School, Boston, MA 02115, USA
4
Comprehensive Weight Control Center, Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Weill Cornell Medical College, New York, NY 10065, USA
5
Stanford University School of Medicine, Stanford, CA 94305, USA
6
Lucile Packard Children’s Hospital, Stanford, CA 94304, USA
7
Laboratory of Dietetics and Clinical Nutrition, Department of Public Health, Experimental and Forensic Medicine, University of Pavia, 27100 Pavia, Italy
8
Institute of Molecular Genetics, National Research Council of Italy, 27100 Pavia, Italy
9
Department of Pediatrics-Endocrinology, Massachusetts General Hospital, Boston, MA 02114, USA
10
Department of Medicine-Neuroendocrine Unit, Boston, MA 02114, USA
*
Author to whom correspondence should be addressed.
Received: 12 July 2018 / Revised: 14 August 2018 / Accepted: 23 August 2018 / Published: 29 August 2018
(This article belongs to the Special Issue Obesity and Metabolic Dysregulation in Childhood)
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Abstract

This paper presents a retrospective cohort study of weight loss medications in young adults aged 21 to 30 following Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG) between November 2000 and June 2014. Data were collected from patients who used topiramate, phentermine, and/or metformin postoperatively. Percentage of patients achieving ≥5%, ≥10%, or ≥15% weight loss on medications was determined and percent weight change on each medication was compared to percent weight change of the rest of the cohort. Our results showed that 54.1% of study patients lost ≥5% of their postsurgical weight; 34.3% and 22.9% lost ≥10% and ≥15%, respectively. RYGB had higher median percent weight loss (−8.1%) than SG (−3.3%) (p = 0.0515). No difference was found in median percent weight loss with medications started at weight plateau (−6.0%) versus after weight regain (−5.4%) (p = 0.5304). Patients taking medications at weight loss plateau lost 41.2% of total body weight from before surgery versus 27.1% after weight regain (p = 0.076). Median percent weight change on metformin was −2.9% compared to the rest of the cohort at −7.7% (p = 0.0241). No difference from the rest of the cohort was found for phentermine (p = 0.2018) or topiramate (p = 0.3187). Topiramate, phentermine, and metformin are promising weight loss medications for 21 to 30 year olds. RYGB patients achieve more weight loss on medications but both RYGB and SG benefit. Median total body weight loss from pre-surgical weight may be higher in patients that start medication at postsurgical nadir weight. Participants on metformin lost significantly smaller percentages of weight on medications, which could be the result of underlying medical conditions. View Full-Text
Keywords: obesity; bariatric surgery; weight loss surgery; young adults; weight loss medications; anti-obesity pharmacotherapy; weight regain obesity; bariatric surgery; weight loss surgery; young adults; weight loss medications; anti-obesity pharmacotherapy; weight regain
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Toth, A.T.; Gomez, G.; Shukla, A.P.; Pratt, J.S.; Cena, H.; Biino, G.; Aronne, L.J.; Stanford, F.C. Weight Loss Medications in Young Adults after Bariatric Surgery for Weight Regain or Inadequate Weight Loss: A Multi-Center Study. Children 2018, 5, 116.

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