Impact of Financial Hardship on Cognitive Decline and Brain Aging

Adults who experienced ongoing financial difficulties showed diminished cognitive abilities and accelerated brain aging, according to a new study. Researchers from University College London analyzed data from 2,759 participants in the U.K. MRC National Survey of Health and Development, born in 1946.

Individuals who reported consistent financial hardship or low income performed poorly on cognitive assessments measuring verbal memory and processing speed. Those with prolonged low income also showed signs of poorer brain health in MRI scans. These scans identified markers of aging, such as brain shrinkage and enlarged ventricles.

“While we are aware that cognitive decline is related to genetic risks and adverse childhood experiences, little was known about the impact of lifelong financial stress,” stated Dr. Jacques Wels, from UCL’s Unit for Lifelong Health & Ageing. The study confirms that chronic poverty is connected to cognitive deterioration, utilizing various measures of financial adversity and cognitive decline, leading to consistent results.

Findings indicated that the strongest connections were found among men, individuals with disadvantaged childhoods, and carriers of the APOE-ε4 genetic variant, which is associated with increased Alzheimer’s risk. Dr. Wels emphasized that cognitive decline involves genetic risks and individual actions but is also influenced by life experiences beyond individual control.

The study highlighted that long-term financial adversity is more linked to accelerated cognitive aging than short-term economic hardships. This could be due to chronic stress causing inflammation or the mental burden from ongoing financial worries, researchers suggested. Despite the study’s findings, the observational design prevents causal conclusions about financial stress directly causing cognitive issues.

Dr. Wels pointed out the study focused on people born in 1946, with their life experiences shaped by the historical context. For instance, stronger effects were noted in men reflecting traditional ‘breadwinner’ roles, which might differ in newer generations. Unmeasured variables might still affect outcomes, the authors noted.

The UCL researchers proposed that reducing long-term poverty might protect brain health. However, further studies are necessary to determine if improving economic conditions directly lessen cognitive decline and dementia risks.