夜間気温上昇が世界的な睡眠に深刻な影響を与えることを警告(Night-time warming threatens the sleep of billions)

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20206-04-09 コペンハーゲン大学(UCPH)

コペンハーゲン大学の研究によると、地球温暖化に伴う夜間気温の上昇が、世界中で数十億人の睡眠に悪影響を及ぼす可能性が示された。特に夜間の気温上昇は人間の体温調節を妨げ、入眠や深い睡眠の維持を困難にする。大規模データの分析から、気温が高い夜ほど睡眠時間が短くなる傾向が確認され、今後の気候変動により睡眠不足人口がさらに増加すると予測される。影響は高齢者や低所得地域でより顕著であり、健康格差の拡大も懸念される。研究は、気候変動が健康に与える新たなリスクとして睡眠問題を位置づけ、都市設計や冷却対策の重要性を指摘している。

<関連情報>

地球規模の気候変動と睡眠に関する対策チームへの警鐘 A wake-up call for a global climate and sleep task force

Kelton Minor ,Christine Blume ,Aric Prather ,Michelle Escobar Carias ,Jamie T Mullins ,Breanne Aylward ,Joshua R Wortzel ,Godfred O Boateng ,Benedict Weobong ,Jodi A Mindell,…
Sleep  Published:21 March 2026
DOI:https://doi.org/10.1093/sleep/zsag075

Abstract

The nighttime ambient environment in which humanity sleeps is heating up due to human-induced climatic changes. Convergent global observational evidence links higher ambient temperatures to accelerated sleep impacts within-individuals, while in-lab evidence confirms that high temperatures mechanistically harm sleep initiation and maintenance. Despite marked methodological and evidentiary advances, the global sensitivity of sleep health to climate impact drivers remains imprecisely characterized and conservatively estimated. Indeed, we show that prior observational temperature and sleep research is nonrepresentative of the global human population, and that the most vulnerable remain undersampled despite evidence of their likely greater sleep sensitivity to heat. Here we sound a worldwide wake-up call for the sleep, climate and health research communities to address these needs through the formation of a global climate and sleep taskforce. This effort can perform a unified global assessment of climate–sleep relationships, impact pathways, and adaptation options in a variable and warming world. It can seek to integrate sleep health and methodological advances into global climate and health monitoring systems and economic assessments, and to translate these findings into scalable action. Persistent climate–sleep impacts and their downstream consequences to human health, wellbeing and performance warrant urgent study, mitigation and adaptation at the same global scale and across all levels of society. The international sleep research community must now act with the rigor, attention and resources needed to protect our nights.

医療・健康
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