経済的困難が記憶老化を加速させることを発見(Financial Decline Linked to Faster Memory Aging)

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2026-03-19 コロンビア大学

コロンビア大学公衆衛生大学院の研究は、高齢者における経済状況の悪化が記憶機能の低下を加速させる可能性を示した。長期データの分析により、収入減少や資産の減少を経験した人は、安定した経済状況にある人に比べて認知機能、とりわけ記憶力の衰えが速い傾向が確認された。この関連はストレス増加や生活環境の変化、医療アクセスの低下などが複合的に影響していると考えられる。研究は、認知症予防において経済的安定も重要な要因であることを示唆し、社会政策や高齢者支援の重要性を強調している。

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中高年層における経済的幸福度の変化と記憶機能の低下 Changes in financial well-being and memory function and decline in middle-aged and older adults

Katrina L Kezios ,Jordan Vo ,Zihan Chen ,Sarah Weber ,Allison E Aiello ,Adina Zeki Al Hazzouri
American Journal of Epidemiology  Published:16 March 2026
DOI:https://doi.org/10.1093/aje/kwag054

Abstract

Many older adults experience financial insecurity. While prior studies link lower later-life SES, financial stress, and financial shocks to worse cognitive outcomes, limited research has examined how dynamic changes in financial well-being—a multidimensional measure of financial circumstances—influence cognitive aging. Here, we examined associations between changes in financial well-being and memory outcomes among 7676 adults aged 50+ in the Health and Retirement Study (“HRS,” 2010–2020). We developed and validated an 8-item index of poor financial well-being using existing HRS survey items aligned with domains from the Consumer Financial Protection Bureau’s Financial Well-Being Scale. In confounder-adjusted linear mixed-effects models, we estimated associations of average financial well-being and significant improvements or worsening in financial well-being over four years with changes in memory z-scores calculated biennially from 2016-2020. Each 1-point worsening in average financial well-being was associated with poorer memory function (β = -0.009 SD, 95% CI, -0.020 to 0.003) and accelerated decline (β = -0.007 SD/year, 95% CI, -0.010 to -0.003). Associations were largest for participants with significant worsening of financial well-being and for those aged ≥65 at baseline. Results were robust to sensitivity analyses addressing potential reverse causation and attrition. These findings suggest that midlife and later-life declines in financial well-being may contribute to accelerated cognitive aging.

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