A UK analysis of 2,759 people from the 1946 British cohort links persistent low income across adulthood to faster brain ageing and poorer cognitive performance at age 53. Participants in the bottom 20% of household income at least twice (reported at ages 26, 43 and 53) showed worse cognitive test scores and poorer brain-health measures in imaging. Effects were strongest in men, people with disadvantaged childhoods, and carriers of an Alzheimer’s-linked genetic variant. Researchers say chronic financial stress may reduce cognitive ‘bandwidth’ and urge policies to support vulnerable households to help limit future dementia cases.
Long-Term Money Troubles Tied to Faster Brain Ageing, UK Study Finds
Supporting those facing financial hardship and reducing poverty could help prevent dementia cases in the future, researchers suggest. Emily Wabitsch/dpa
Persistent financial hardship across adulthood is linked with signs of accelerated brain ageing and poorer cognitive performance, according to a new analysis of participants from the 1946 British cohort.
Study Details
Researchers at UCL analysed data from 2,759 people taking part in the MRC National Survey of Health and Development (the 1946 British cohort). Household income was reported at ages 26, 43 and 53. Participants were classified as having persistent low income if they were in the bottom 20% on at least two of those occasions — a group that represented roughly one in six study members.
Measures Of Hardship And Outcomes
Financial hardship in the study included struggling to manage on household income or having difficulty paying bills. Cognitive tests were administered at age 53. A subset of participants underwent brain imaging, allowing researchers to compare brain-health metrics alongside cognitive performance.
Supporting those facing financial hardship and reducing poverty could help prevent dementia cases in the future, researchers suggest. Jan Woitas/dpa
Key Findings
Adults who experienced repeated money troubles across early and mid-adulthood performed worse on cognitive tests at age 53. In the imaging subgroup, lower-income participants showed substantially poorer brain-health measures — reported in the study as differences around 69–71 on the brain-health metric used by the authors.
Who Was Most Affected
The association between long-term financial adversity and worse cognitive or brain outcomes was stronger among men, people who experienced childhood disadvantage, and carriers of a genetic variant linked to higher Alzheimer’s risk.
Possible Mechanism
"It is the accumulation of hardship over many years that is linked to the worst cognitive health outcomes, rather than isolated episodes of adversity," said Dr Jacques Wels of UCL's Unit for Lifelong Health and Ageing.
The authors suggest chronic financial stress may reduce the brain's 'bandwidth' for functions such as attention and decision-making, placing continuous strain on neural systems involved in cognitive processing and producing gradual impairments that become evident over time.
Policy Implications
Given current cost-of-living pressures, the researchers argue that policies to support vulnerable households and reduce long-term poverty could help lower future rates of cognitive decline and dementia. As Professor Praveetha Patalay of UCL noted, supporting people facing sustained financial hardship may have benefits for long-term brain health as well as for economic wellbeing.
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