A study published in Innovation in Aging examined the relationship between long-term financial difficulties and cognitive health in over 2,700 UK adults followed since birth. Researchers found that individuals who experienced persistent low income or ongoing financial hardship during early and middle adulthood performed worse on cognitive tests by age 53. Among participants who underwent brain imaging in later life, lasting financial strain was linked to poorer brain health indicators, including increased brain shrinkage.
The research, led by University College London using data from the 1946 British cohort study, focused on the cumulative effects of financial adversity rather than isolated hardship. Approximately one in six participants met criteria for persistent low income, defined as falling within the bottom 20% of earnings at least twice during assessments at ages 26, 43, and 53. An additional one in eight participants experienced persistent financial hardship, measured through reports of struggling to manage expenses or difficulty paying bills between ages 36 and 53. The associations between financial strain and cognitive decline remained significant even after accounting for childhood cognitive ability, education level, and early disadvantage.
The impact of financial hardship appeared more pronounced among men, those with childhood disadvantage, and individuals carrying a genetic variant linked to increased Alzheimer’s disease risk. Researchers suggested multiple pathways through which chronic financial stress may affect brain health, including inflammation triggered by prolonged stress and cognitive load from persistent financial preoccupation. The study’s authors indicated that chronic poverty reduction and support for financially disadvantaged populations could have implications for preventing cognitive decline and dementia cases.
Cognitive assessments measured verbal memory and processing speed, while brain health was evaluated through magnetic resonance imaging scans that detected brain shrinkage and ventricular enlargement. An unexpected pattern emerged in memory performance, where individuals who experienced financial hardship showed steeper cognitive declines by age 53 but slower subsequent decline through age 69, likely due to earlier substantial cognitive losses.
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