Neuroimaging-derived brain age is associated with life satisfaction in cognitively unimpaired elderly: A community-based study

Daichi Sone, Iman Beheshti, Shunichiro Shinagawa, Hidehito Niimura, Nobuyuki Kobayashi, Hisashi Kida, Ryo Shikimoto, Yoshihiro Noda, Shinichiro Nakajima, Shogyoku Bun, Masaru Mimura, Masahiro Shigeta

研究成果: Article査読

抄録

With the widespread increase in elderly populations, the quality of life and mental health in old age are issues of great interest. The human brain changes with age, and the brain aging process is biologically complex and varies widely among individuals. In this cross-sectional study, to clarify the effects of mental health, as well as common metabolic factors (e.g., diabetes) on healthy brain aging in late life, we analyzed structural brain MRI findings to examine the relationship between predicted brain age and life satisfaction, depressive symptoms, resilience, and lifestyle-related factors in elderly community-living individuals with unimpaired cognitive function. We extracted data from a community-based cohort study in Arakawa Ward, Tokyo. T1-weighted images of 773 elderly participants aged ≥65 years were analyzed, and the predicted brain age of each subject was calculated by machine learning from anatomically standardized gray-matter images. Specifically, we examined the relationships between the brain-predicted age difference (Brain-PAD: real age subtracted from predicted age) and life satisfaction, depressive symptoms, resilience, alcohol consumption, smoking, diabetes, hypertension, and dyslipidemia. Brain-PAD showed significant negative correlations with life satisfaction (Spearman’s rs= −0.102, p = 0.005) and resilience (rs= −0.105, p = 0.004). In a multiple regression analysis, life satisfaction (p = 0.038), alcohol use (p = 0.040), and diabetes (p = 0.002) were independently correlated with Brain-PAD. Thus, in the cognitively unimpaired elderly, higher life satisfaction was associated with a ‘younger’ brain, whereas diabetes and alcohol use had negative impacts on life satisfaction. Subjective life satisfaction, as well as the prevention of diabetes and alcohol use, may protect the brain from accelerated aging.

本文言語English
論文番号25
ジャーナルTranslational psychiatry
12
1
DOI
出版ステータスPublished - 2022 12月

ASJC Scopus subject areas

  • 精神医学および精神衛生
  • 細胞および分子神経科学
  • 生物学的精神医学

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