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Increase in Protein Intake After 3 Months of RYGB Is an Independent Predictor for the Remission of Obesity in the First Year of Surgery

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Abstract

Introduction

Although bariatric surgery promotes dietary changes, many questions regarding their effect on weight loss remain unanswered.

Objective

The aim of this study was to evaluate changes in dietary intake and predictive factors of obesity remission in the first 12 months after RYGB.

Methods

Fifty-one patients (mean 39.34 ± 9.38 years, 68.7% women) who underwent RYGB were included in this study. Dietary intake was evaluated through a 24-h dietary recall and subsequently classified by NOVA, macronutrients and calories. The predictive factors for obesity remission within 12 months after RYGB were evaluated by Cox regression.

Results

At baseline, 62.7% of the patients presented severe obesity; mean excess weight loss was greater than 80% after 1 year of surgery and about 70% of the patients were no longer diagnosed with obesity. An increase in percentage of calories from protein was observed at 3 and 12 months after surgery. The caloric contribution of ultra-processed foods was low at 3 months after surgery while that of unprocessed or minimally processed foods was high at 3 and 12 months after surgery. From the Cox regression analysis, preoperative BMI (HR, 0.78; 95% CI, 0.69–0.88) and age (HR, 0.94; 95% CI, 0.89–0.99) showed an inverse association with obesity remission. Also, Δ protein (at 3 months–baseline) showed a positive association with obesity remission (HR, 1.06; 95% CI, 1.01–1.12).

Conclusion

Lower preoperative BMI, lower age, and higher protein intake at 3 months after surgery may favor remission of obesity in up to 12 months compared with baseline.

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Acknowledgments

We thank all the volunteers in the research.

Funding

This project is funded by the Coordination for the Improvement of Personnel (CAPES).

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Authors and Affiliations

  1. Nutrition Course, Federal University of Tocantins, Quadra 109 North, NS-15 Avenue, ALCNO-14, Block Bala2, North Director Plan, Palmas, Tocantins, 77001-090, Brazil

    Sônia Lopes Pinto

  2. Federal University of Viçosa, Viçosa, Minas Gerais, Brazil

    Sônia Lopes Pinto

  3. Department of Nutrition and Health, Federal University of Viçosa, University Campus, Viçosa, Minas Gerais, 36570-900, Brazil

    Leidjaira Lopes Juvanhol & Josefina Bressan

Authors
  1. Sônia Lopes Pinto
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  2. Leidjaira Lopes Juvanhol
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  3. Josefina Bressan
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Contributions

SLP: Contributed in the design of the study, data collection, analysis and interpretation, manuscript writing, and final version approval.

LLJ and JB: Contributed in the design of the study, analysis and interpretation of the data, critical revision of the manuscript, and approval of the final version.

Corresponding author

Correspondence to Sônia Lopes Pinto.

Ethics declarations

All the patients signed an informed consent form (ICF) accepting to participate in the project. The study was approved by the Ethics and Research Committee (CEP) of the Federal University of Viçosa (no. 1.852.365).

Conflict of Interest

The authors declare that they have no conflicts of interest.

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Pinto, S.L., Juvanhol, L.L. & Bressan, J. Increase in Protein Intake After 3 Months of RYGB Is an Independent Predictor for the Remission of Obesity in the First Year of Surgery. OBES SURG 29, 3780–3785 (2019). https://doi.org/10.1007/s11695-019-04124-8

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  • DOI: https://doi.org/10.1007/s11695-019-04124-8

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