隣接する米国における不安とうつに対する気候変動の影響の予測と評価:ダメージ関数アプローチ
Anna Belova1, Kate Munson1, Durban Keeler1
1ICF, Reston, VA, USA.
The Lancet. Planetary health
|February 23, 2026
まとめ
気候変動は,米国の成人の不安とうつ病の症状日数を増加させ,経済的コストを大きく引き起こすと予測されています. アパラチアのような低所得者層や地域は,温暖化による不釣り合いの高い精神衛生上の負担に直面しています.
科学分野:
- 環境衛生 環境衛生 環境衛生
- 気候変動の影響 気候変動の影響
- 精神衛生の流行病学 精神衛生の流行病学
背景:
- 気候変動と米国のメンタルヘルスに関する既存の研究は限られており,しばしば自己報告データを使用し,人口規模の予測が欠けている.
- 自殺以外の将来の精神保健への影響を定量化した研究はほとんどなく,不安やうつ病などのより広範な罹病率に焦点を当てている.
研究 の 目的:
- 1-6°Cの温暖化と関連する降水量の変化が,米国成人の自己報告された精神的健康障害,不安,うつ病の症状日に与える影響を予測する.
- 現在の社会統計学的シナリオと世紀の終わりの社会統計学的シナリオの下で,これらの予測された精神的健康への影響の経済的負担を定量化するために.
主な方法:
- CMIP6気候モデルの予測と流行病学的に導かれた被曝反応の関係を組み合わせた.
- 米国疾病管理予防センターの行動リスク因子監視システム (BRFSS) のデータをベースライン発生率と症状日配分に活用した.
- 医療費パネル調査データを用いて不確実性の伝播と経済的評価のためのモンテカルロシミュレーションを採用しました.
主要な成果:
- 1~6°Cの温暖化により,年間4010万~18億回の過剰な不安症状日と329万~14億回の過剰なうつ症状日が生じる可能性があります.
- 推定される年間経済負担は,不安症で13~570億ドル,うつ病で11~470億ドルである.
- 低所得層とアパラチアのような地域は,精神衛生上の負担が最も大きいと予測されています.
結論:
- 調査結果は,特に適応能力が限られた経済的に不利な地域において,精神保健への投資の緊急の必要性を強調しています.
- 気候変動によるメンタルヘルスへの影響を軽減するために,個人およびコミュニティの回復力を促進することは極めて重要です.
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