Micronutrient and Protein Deficiencies After Gastric Bypass and Sleeve Gastrectomy: a 1-year Follow-up
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Roux-en-Y gastric bypass (GBP) and sleeve gastrectomy (SG) have increased dramatically, potentially increasing the prevalence of nutritional deficiencies. The aim of this study was to analyze the effects of food restriction during the first year after bariatric surgery (BS) on nutritional parameters.
Twenty-two and 30 obese patients undergoing GBP and SG were prospectively followed at baseline and 3, 6, and 12 months after BS (N = 14 and N = 19 at T12). We evaluated food intake and nutrient adequacy (T0, T3, T12), as well as serum vitamin and mineral concentration (T0, T3, T6, T12).
At baseline, GBP and SG patients had similar clinical characteristics, food intake, nutrient adequacy, and serum concentration. The drastic energy and food reduction led to very low probabilities of adequacy for nutrients similar in both models (T3, T12). Serum analysis demonstrated a continuous decrease in prealbumin during the follow-up, indicating mild protein depletion in 37 and 38 % of GBP patients and 57 and 52 % of SG patients, respectively, at T3 and T12. Conversely, despite the low probabilities of adequacy observed at T3 and T12, systematic multivitamin and mineral supplementation after GBP and SG prevented most nutritional deficiencies.
GBP and SG have comparable effects in terms of energy and food restriction and subsequent risk of micronutrient and protein deficiencies in the first year post BS. Such results advocate for a cautious monitoring of protein intake after GPB and SG and a systematic multivitamin and mineral supplementation in the first year after SG.
KeywordsBariatric surgery Roux-en-Y gastric bypass Sleeve gastrectomy Protein deficiency Multivitamin and mineral supplementation
The authors wish to thank Ms. Agathe Arlotti for the coordination of programs on bariatric surgery (BARICAN program), Ms. Valentine Lemoine for her help in the follow-up of the patients, and Dr. Florence Marchelli who contributed to clinical and biological database constitution.
This project is supported by the « Contrat de Recherche Clinique » from the Health Ministry (CRC Fibrota P100503 – IDRCB 2011-A00759-32, recorded on the clinical trial website (NCT: NCT01655017)), as well as by the European Union’s Seventh Framework Programme for research, technological development and demonstration under grant agreement HEALTH-F4-2012-305312 (Metacardis) and the National Agency of Research (Investissement D’Avenir, ANR-10-IAHU-05). JAW received a grant from Institut Appert and from Nestlé research.
Conflict of Interest
The authors declare that they have no competing interests.
Compliance with Ethical Standards
All procedures performed in this clinical protocol involving human participants (number P100503 – IDRCB 2011-A00759-32) and which was recorded on the clinical trial website (NCT: NCT01655017) were in accordance with the ethical standards of the Hotel-Dieu hospital ethics committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
Informed consent was obtained from all individual participants included in the study.
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