A large British study spanning more than 70 years has found that people who experience chronic money struggles over their working lives show measurable declines in memory and processing speed by their 50s, along with signs of accelerated brain shrinkage decades later — with men, those raised in poorer households, and carriers of a key Alzheimer’s risk gene (APOE-ε4) appearing most vulnerable.
Long-term financial stress accelerates age-related cognitive decline. Image credit: Thomas Breher.
“Dementia is one of the leading contributors to the global burden of disease, and the rates are estimated to triple to 150 million over the next three decades,” said University College London’s Dr. Jacques Wels and colleagues.
“There is a need to better understand how modifiable environmental exposures may be associated with cognitive aging.”
“The association between childhood and adulthood socioeconomic circumstances and cognitive functioning has been shown at different stages of the life course.”
“Financial adversity — commonly defined as having a lack of money or resources to provide basic household necessities — is also associated with cognitive impairment and decline.”
The authors looked at data from the 1946 British birth cohort (MRC National Survey of Health and Development), one of the world’s longest-running longitudinal studies, along with a related brain-imaging project called Insight 46.
They tracked nearly 2,800 participants’ household income and self-reported financial hardships — such as difficulty paying bills — from age 26 to 53.
They also examined their cognitive test scores through age 69 and, for a subset of about 470 participants, detailed brain scans taken in their early 70s.
“Most studies on cognitive ageing look at financial hardship at only a single point in time,” Dr. Wels said.
“Our study using several decades of data allows us to see that it is the accumulation of hardship over many years that is linked to the worst cognitive health outcomes, rather than occasional episodes of adversity.”
The findings showed that repeated exposure to low income or financial hardship was associated with lower scores on tests of processing speed and verbal memory by midlife.
Notably, it was sustained hardship — not brief or isolated episodes — that mattered most, supporting what researchers call the accumulation model of life course disadvantage, in which repeated stressors compound over time to damage health.
The brain scans, according to the team, added a physical dimension to tho findings.
Participants who had persistently low household income showed larger ventricular volume — a marker often associated with brain tissue loss — in their early 70s.
When the researchers looked at how brain volume changed over a roughly two-year follow-up period, they found no broad, direct effect of financial hardship.
But certain groups stood out as especially affected: men who had experienced persistent financial hardship showed faster overall brain shrinkage and enlargement of the brain’s fluid-filled cavities compared with women; people who grew up in lower-income households were more vulnerable to hippocampal atrophy, a brain region tied to memory, when they also faced financial strain as adults; and carriers of the APOE-ε4 gene variant, the strongest known genetic risk factor for Alzheimer’s disease, showed the steepest brain volume losses and the highest levels of amyloid protein buildup, a hallmark of Alzheimer’s pathology, when they had also experienced chronic financial adversity.
“Our findings suggest that supporting people facing financial hardship and reducing chronic poverty could also help prevent cognitive decline and dementia cases in the future,” said University College London’s Professor Praveetha Patalay.
The study was published on July 23, 2026 in the journal Innovation in Aging.
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Yiwen Liu et al. 2026. Persistent financial adversity and cognitive aging: a life course investigation. Innovation in Aging 10 (8): igag054; doi: 10.1093/geroni/igag054
