読書の楽しみと健康――認知機能・精神的健康への効果(Reading for pleasure – and for better health)

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2026-09-15 ケンブリッジ大学

ケンブリッジ大学の研究者らは、読書を楽しむこと(reading for pleasure)と脳の健康、認知機能、精神的ウェルビーイングとの関連をまとめたレビューを発表した。子ども・若者では、幼少期から読書を楽しむ習慣がある人ほど、注意力、記憶、実行機能、学業成績が良好で、精神的問題が少なく、睡眠時間が長くスクリーン利用が少ないという研究結果が報告されている。成人でも、読書はストレス軽減、リラクゼーション、共感性の向上などと関連し、高齢者では認知機能低下や認知症リスクの低下との関連が示されている。脳画像研究では、言語、学習、感情調節、実行制御などに関わる脳領域の構造や白質結合との関連も確認されている。一方、多くの研究は関連性を示すもので、因果関係については今後の検証が必要である。研究者らは、個人読書だけでなく読書会などの共有読書にも社会的つながりを通じた利点があると指摘している。

<関連情報>

読書と脳の健康、認知、幸福感、精神的健康との関連性 Reading and associations with brain health, cognition, well-being, and mental health

Barbara J. Sahakian,Vicki Perrin and Christelle Langley
Psychological Medicine  Published:15 September 2026
DOI:https://doi.org/10.1017/S0033291726105625

Abstract

Growing recognition of the importance of prevention in mental health has led to increased interest in modifiable lifestyle factors that support brain health, cognition, and well-being. This editorial examines evidence for an accessible and low-cost protective factor across the lifespan, namely reading for pleasure. Drawing on subjective surveys and objective studies using longitudinal, neuroimaging, and behavioral methods, we highlight converging findings that link reading engagement with improved brain and mental health, better cognitive performance, and reduced risk of cognitive decline. Survey data in adults suggested that reading was associated with reduced stress, greater empathy, enhanced well-being, and decreased loneliness. Longitudinal cohort studies further indicate that cognitively stimulating activities, particularly reading, are associated with a lower risk of dementia and slower cognitive decline, even among individuals with lower educational attainment. In childhood and adolescence, early reading for pleasure has been linked to better attention, memory, executive function, academic achievement, and fewer mental health problems. Neuroimaging findings suggest that reading is associated with structural and functional differences in brain regions supporting executive control, emotional regulation, and social cognition. Importantly, these benefits appear independent of socioeconomic background. Book club studies may suggest additional social benefits of reading in groups. Together, the evidence supports reading for pleasure and engaging in book clubs as scalable interventions, which may promote cognitive reserve, resilience, and lifelong mental well-being.

医療・健康
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