Abstract
Weight loss prior to bariatric surgery is often recommended, but success with weight loss varies. The current study piloted the efficacy of a structured, low-glycemic portion-controlled diet (PCD) intervention compared to usual dietary care (UDC). The study randomized 73 subjects in a 12-week, controlled, randomized design. Participants’ height, weight, BMI, percent body fat, fasting lipids, and glucose were measured at baseline and after 12 weeks. Although both groups had significant BMI reductions, there were no differences based upon diet and no effect on percent body fat or metabolic outcomes (all p values >0.10). Although patients were able to reduce their BMI through dietary intervention, losses were minimal. Both groups may have been less adherent or motivated to adopt dietary recommendations because of their upcoming bariatric surgery.
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References
Sjöström L, Narbro K, Sjöström CS, et al. Effects of bariatric surgery on mortality in Swedish obese subjects. N Engl J Med. 2007;357:741–52.
Fris RJ. Preoperative low energy diet diminishes liver size. Obes Surg. 2004;14:1165–70.
Liu RC, Sabnis AA, Forsyth C, et al. The effects of acute preoperative weight loss on laparoscopic Roux-en-Y gastric bypass. Obes Surg. 2005;15:1396–402.
Huerta S, Dredar S, Hayden E, et al. Preoperative weight loss decreases the operative time of gastric bypass at a Veterans Administration Hospital. Obes Surg. 2008;18:508–12.
Alami RS, Morton JM, Schuster R, et al. Is there a benefit to preoperative weight loss in gastric bypass patients? A prospective randomized trial. Surg Obes Relat Dis. 2007;3:141–6.
Still CD, Benotti P, Wood GC, et al. Outcomes of preoperative weight loss in high-risk patients undergoing gastric bypass surgery. Arch Surg. 2007;142:994–8.
Benotti PN, Still CD, Wood GC, et al. Preoperative weight loss before bariatric surgery. Arch Surg. 2009;144:1150–5.
Ochner CN, Puma LM, Raevuori A, et al. Effectiveness of a prebariatric surgery insurance-required weight loss regimen and relation to postsurgical weight loss. Obesity. 2010;18:287–92.
Tsai AG, Wadden TA. Systematic review: an evaluation of major commercial weight loss programs in the United States. Ann Intern Med. 2005;142:56–66.
Foster GD, Borradaile KE, Vander Veur SS, et al. The effects of a commercially available weight loss program among patients with type II diabetes: a randomized study. Postgrad Med. 2009;121:113–8.
Sarwer DB, von Sydow Green A, Vetter ML. Behavior therapy for obesity: where are we now? Curr Opin Endocrinol Diabetes Obes. 2009;16:347–52.
Barte JC, Ter Bogt NC, Bogers RP, et al. Maintenance of weight loss after lifestyle interventions for overweight and obesity, a systematic review. Obes Rev. 2010;11:899–906.
Maki KC, Rains TM, Kaden VN, et al. Effects of a reduced-glycemic-load diet on body weight, body composition, and cardiovascular disease risk makers in overweight and obese adults. Am J Clin Nutr. 2007;85:724–34.
Acknowledgments
This study was supported by a grant from Nutrisystem® Incorporated.
Conflict of Interest
Dr. Heinberg and Dr. Schauer received a grant from Nutrisystem® for the conduct of the randomized clinical trial.
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Heinberg, L.J., Schauer, P.R. Pilot Testing of a Portion-Controlled, Commercially Available Diet on Presurgical Weight Loss and Metabolic Outcomes in Patients Undergoing Bariatric Surgery. OBES SURG 24, 1817–1820 (2014). https://doi.org/10.1007/s11695-014-1371-2
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DOI: https://doi.org/10.1007/s11695-014-1371-2