小児肥満への家族ベース行動療法が将来の代謝疾患を予防することを示す研究（Study: Family-based behavioral treatment for children who are overweight or obese can prevent metabolic disease later in life）

2026-06-24

2026-06-23 バッファロー大学（UB）

米国のUniversity at Buffaloの研究チームは、小児期の肥満に対する適切な治療が、将来的な代謝性疾患の発症リスクを大幅に低減できることを明らかにした。研究では、肥満の子どもを長期に追跡し、体重管理や生活習慣改善などの治療介入が成人期の健康に及ぼす影響を分析した。その結果、小児期に肥満が改善した子どもでは、2型糖尿病、高血圧、脂質異常症などの代謝疾患の発症率が著しく低下していた。一方、肥満が持続した場合は、これらの疾患リスクが高い状態のまま推移することが確認された。研究者らは、肥満を単なる体重の問題ではなく、将来の慢性疾患を予防するための重要な医療課題として捉える必要があると指摘している。本研究は、小児期からの早期介入が生涯にわたる健康改善につながることを示し、公衆衛生政策や小児医療に重要な根拠を提供するものである。

＜関連情報＞

小児肥満に対する家族ベースの行動療法における臨床的に有効な小児の変化：個別参加者の大規模分析。
Clinically effective child change in family-based behavioral treatment for pediatric obesity: An individual participant mega-analysis.

Epstein, L. H., Neuwald, N. V., Paluch, R. A., Moore, M. D., & Wilfley, D. E.
Health Psychology Published:2026
DOI:https://psycnet.apa.org/doi/10.1037/hea0001612

Objective: Family-based behavioral treatment (FBT) is an evidence-based treatment that has shown statistically significant short- and long-term outcomes for children. However, statistical and clinical significance are different ways to study the impact of a treatment, and recent data have indicated the degree of body mass index z-score (zBMI) change that prevents the development of cardiometabolic disease. Method: We conducted a mega-analysis using an individual participant database extracted from 16 randomized controlled studies (N = 1,098) on FBT for 6–12-year-old children with overweight or obesity and a participating parent with overweight and obesity that had at least 1-year follow-up. These data were used to evaluate clinical effectiveness based on −0.25 zBMI change and what percentage of children showed reversal of obesity at 6-, 12-, 24-, 60-, and 120-month follow-up. Analyses also examined whether age and sex were predictors of zBMI change. Results: Across the combined databases, 70%, 61%, 52%, 54%, and 68% met the −0.25 zBMI criteria, and 29%, 27%, 23%, 46%, and 48% reversed their obesity status at 6, 12, 24, 60, and 120 months, respectively. Age was a reliable predictor of change, with younger children showing greater change up to the 24-month follow-up. Conclusions: These results suggest FBT is associated with clinical effectiveness, with long-term effects stable or improving over time. These data support the utility of FBT, and providing data on the clinical effectiveness of pediatric obesity treatment complements traditional reporting of statistical significance of FBT to support the clinical utility of FBT. (PsycInfo Database Record (c) 2026 APA, all rights reserved)