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Introduction <p>Bariatric surgery offers sustained weight loss for adolescents with severe obesity, but long-term data on its effectiveness is limited. Our objective was to compare outcomes in adolescents who underwent bariatric surgery versus those who received nutritional intervention.</p> Methods <p>We conducted a retrospective cohort study of individuals under 18 who underwent bariatric surgery within &lt; institution name&gt; between 2011 and 2021. A comparison group included adolescents with class II obesity or higher and who had ≥ 3 dietitian visits. Anthropometric measures and blood test results (hemoglobin, TSH, vitamin D, folic acid, B12) were collected over five years. Multivariate linear mixed models assessed group differences over time.</p> Results <p>The cohort included 278 adolescents: 152 in the surgery group and 126 in the nutritional group. Over five years, BMI decreased from 44 to 32 in the surgery group but remained largely unchanged in the nutritional group (45.5 to 44), <i>p</i> &lt; 0.001. At year 5, the surgery group had lower hemoglobin (12.45 vs. 13.46, <i>p</i> &lt; 0.001) and declining B12 levels (<i>p</i> &lt; 0.001). TSH levels decreased modestly in both groups, more so in the surgery group (<i>p</i> = 0.04).</p> Conclusions <p>Bariatric surgery in adolescents led to significant, sustained BMI reductions but was associated with declines in some nutritional markers, highlighting the need for ongoing monitoring.</p>

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Effectiveness of Bariatric Surgery Versus Nutritional Interventions in Adolescents: A Retrospective Cohort Study

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年2月28日

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  • Miri Mizrahi Reuveni,
  • Bar Cohen,
  • Dor Atias,
  • Ilan Yehoshua,
  • Shelley A Sternberg,
  • Eduardo Schejter,
  • Zorian Radomyslsky,
  • Yakov Segal,
  • Limor Tal Pony,
  • Galit Kowen Sandbank,
  • Joseph Azuri,
  • Limor Adler

摘要

Introduction

Bariatric surgery offers sustained weight loss for adolescents with severe obesity, but long-term data on its effectiveness is limited. Our objective was to compare outcomes in adolescents who underwent bariatric surgery versus those who received nutritional intervention.

Methods

We conducted a retrospective cohort study of individuals under 18 who underwent bariatric surgery within < institution name> between 2011 and 2021. A comparison group included adolescents with class II obesity or higher and who had ≥ 3 dietitian visits. Anthropometric measures and blood test results (hemoglobin, TSH, vitamin D, folic acid, B12) were collected over five years. Multivariate linear mixed models assessed group differences over time.

Results

The cohort included 278 adolescents: 152 in the surgery group and 126 in the nutritional group. Over five years, BMI decreased from 44 to 32 in the surgery group but remained largely unchanged in the nutritional group (45.5 to 44), p < 0.001. At year 5, the surgery group had lower hemoglobin (12.45 vs. 13.46, p < 0.001) and declining B12 levels (p < 0.001). TSH levels decreased modestly in both groups, more so in the surgery group (p = 0.04).

Conclusions

Bariatric surgery in adolescents led to significant, sustained BMI reductions but was associated with declines in some nutritional markers, highlighting the need for ongoing monitoring.