公衆衛生
Lilah M Besser1, Jana A Hirsch2, Timothy M Hughes3
1University of Miami Miller School of Medicine, Boca Raton, FL, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 23, 2025
まとめ
中年期の緑豊かな近隣に住むことは、晩年の認知機能低下を遅らせることと関連がある。これには、全体的な認知機能と処理速度の向上が含まれ、脳の健康における緑地の重要性を強調している。
科学分野:
- 環境保健; 神経科学; 公衆衛生
背景:
- 緑豊かな近隣は、身体活動、社会的関与、ストレス軽減を提供し、これらはアルツハイマー病および関連認知症(ADRD)のリスク低下と関連しています。; 中年期の緑地への曝露は、ADRDの発症に関連する健康行動に大きく影響する可能性があります。; 中年期の緑地への曝露と晩年の認知機能との関連を調査した研究はほとんどありません。
研究 の 目的:
- 中年期の近隣の緑地への曝露と、晩年の認知機能低下との関連を調査すること。; 緑豊かな近隣環境が時間の経過とともに認知機能の軌跡にどのように影響するかを分析すること。
主な方法:
- 中年期の住所履歴(45〜54歳)を持つ2,881人の多民族的動脈硬化研究(MESA)参加者のデータを使用しました。; LANDSAT衛星画像から派生した1,230mバッファー内の正規化差植生指数(NDVI)を使用して、中年期の近隣の緑地を測定しました。; 多変量線形混合効果回帰を使用して、ベースラインで55歳以上の参加者を対象に、約10年間にわたる全体的な認知機能(CASI)と処理速度(DSC)を評価しました。
主要な成果:
- 中年期に最も緑豊かな地域に住んでいた参加者は、緑の少ない地域に住んでいた参加者と比較して、全体的な認知機能(CASI)の低下が緩やかでした。; 中年期の近隣の緑地への曝露が高い個人では、処理速度の低下(DSC)も緩やかであることが観察されました。; これらの関連性は、人口統計学的要因、社会経済的地位、および併存疾患を調整した後も有意なままでした。
結論:
- 中年期の緑豊かな近隣に住むことは、晩年の認知機能の維持と関連しています。; この調査結果は、環境の緑地が認知機能低下の軽減に役割を果たしていることを示唆しています。; 緑豊かな近隣環境を促進することは、長期的な脳の健康をサポートするための戦略となる可能性があります。
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