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強迫的ハイボリューム摂食における新たな表現型としてのボリューム依存症の紹介
1University of Toronto Temerty Faculty of Medicine, Toronto, ON, Canada.
Frontiers in public health
|January 28, 2026
まとめ
強迫的ハイボリューム摂食(CHVE)は、従来の食物依存症モデルとは異なり、満腹感を得るために大量に食べることを含みます。この独特な摂食パターンは、標的を絞った治療法のさらなる研究に値します。
科学分野:
- 行動神経科学
- 臨床心理学
- 消化器病学
背景:
- 摂食障害および食物依存症の研究では、低カロリー食品の大量摂取による満腹感への欲求が見過ごされがちです。
- 現在の診断システムには、過食症とは異なる、ボリューム探索型摂食行動の基準が欠けています。
- 胃の膨満および摂取量は、科学文献において主要な強化因子としてほとんど考慮されていません。
研究 の 目的:
- 強迫的ハイボリューム摂食(CHVE)を明確な臨床的概念として提唱すること。
- 胃の容積および膨満感が特定の摂食行動における中心的な動機付けとなる役割を強調すること。
- ボリューム探索型摂食表現型の認識と研究を提唱すること。
主な方法:
- 摂食障害患者の水負荷試験からの結果の統合。
- 胃伸展受容器および迷走神経反応に関する動物研究のレビュー。
- 腸内ホルモン、報酬回路、および摂食行動における神経画像研究の統合。
主要な成果:
- 神経性過食症および過食性障害の患者は、胃の電気生理学的活動の変化を示し、満腹感を得る前に大量に摂取します。胃伸展受容器および迷走神経反応は可塑的であり、満腹感および摂取量に影響を与えます。腸内ホルモンおよび報酬回路は、内臓感覚と摂食行動を結びつけ、神経画像研究ではボリュームに対する報酬反応の変化が観察されています。
結論:
- 胃の容積自体が摂食行動における意味のある次元であり、臨床的および科学的な注意に値します。
- 胃の膨満を動機付けとする強迫的ハイボリューム摂食(CHVE)は、明確な概念として提唱されます。
- 「ボリューム依存症」サブタイプがCHVE内に存在する可能性があり、効果的な治療法開発のためにさらなる研究が必要です。
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