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Background <p>Metabolic bariatric surgery (MBS) is the most effective obesity treatment. The increasing number of MBS among young patients has led to more post-bariatric pregnancies. Our study investigates how breastfeeding duration impacts postpartum weight retention and health outcomes for mothers and babies after MBS.</p> Methods <p>MOMBARIS (Maternal Outcomes of Bariatric Surgery and Pregnancy Study) is a multicentre study. The population is derived from MOMBARIS 2, which focused on obstetric outcomes. It included patients who became pregnant following MBS, analysing pre-operative metrics, type of surgery, pregnancy details, and breastfeeding duration. Data analysis was conducted using Julius.ai.</p> Results <p>We analysed 156 patients post-MBS, with 148 pregnancies leading to childbirth. Among them, 131 had laparoscopic sleeve gastrectomy (LSG), 12 underwent Roux-en-Y gastric bypass (RYGB), and 5 had one anastomosis gastric bypass (OAGB). The mean age was 31.7 ± 5.45&#xa0;years (range 19–48) with a pre-operative BMI of 43.9&#xa0;kg/m<sup>2</sup> ± 5.8&#xa0;kg/m<sup>2</sup> (range 31.9–68.8). The mean %EWL was 72% (± 28.6). Seventeen patients had multiple children. Breastfeeding results indicated that 116 patients (78.4%) initiated breastfeeding, with 40.5% continuing beyond 6&#xa0;months. No significant differences were found in BMI metrics across breastfeeding groups.</p> Conclusions <p>Bariatric outcomes (%EWL, %TWL) show no statistical difference based on breastfeeding patterns, nor does breastfeeding significantly affect weight loss maintenance post-surgery. Additionally, delaying pregnancy after surgery does not guarantee more significant weight loss.</p>

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The Impact of Breastfeeding on Maintaining Body Weight After Bariatric Surgery—A Retrospective Analysis of Maternal Outcomes of Bariatric Surgery and Pregnancy Study (MOMBARIS) Multicenter Data

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年9月8日

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  • Piotr Krzysztof Kowalewski,
  • Maciej Walędziak,
  • Piotr Małczak,
  • Wojciech Kupczyk,
  • Natalia Dowgiałło-Gornowicz,
  • Anna Różańska-Walędziak,
  • Piotr Major

摘要

Background

Metabolic bariatric surgery (MBS) is the most effective obesity treatment. The increasing number of MBS among young patients has led to more post-bariatric pregnancies. Our study investigates how breastfeeding duration impacts postpartum weight retention and health outcomes for mothers and babies after MBS.

Methods

MOMBARIS (Maternal Outcomes of Bariatric Surgery and Pregnancy Study) is a multicentre study. The population is derived from MOMBARIS 2, which focused on obstetric outcomes. It included patients who became pregnant following MBS, analysing pre-operative metrics, type of surgery, pregnancy details, and breastfeeding duration. Data analysis was conducted using Julius.ai.

Results

We analysed 156 patients post-MBS, with 148 pregnancies leading to childbirth. Among them, 131 had laparoscopic sleeve gastrectomy (LSG), 12 underwent Roux-en-Y gastric bypass (RYGB), and 5 had one anastomosis gastric bypass (OAGB). The mean age was 31.7 ± 5.45 years (range 19–48) with a pre-operative BMI of 43.9 kg/m2 ± 5.8 kg/m2 (range 31.9–68.8). The mean %EWL was 72% (± 28.6). Seventeen patients had multiple children. Breastfeeding results indicated that 116 patients (78.4%) initiated breastfeeding, with 40.5% continuing beyond 6 months. No significant differences were found in BMI metrics across breastfeeding groups.

Conclusions

Bariatric outcomes (%EWL, %TWL) show no statistical difference based on breastfeeding patterns, nor does breastfeeding significantly affect weight loss maintenance post-surgery. Additionally, delaying pregnancy after surgery does not guarantee more significant weight loss.