Being poorer might age our brains faster
Embargoed until:
Publicly released:
2024-03-19 04:00
Swiss and German researchers say they found a link between having a lower household income and the speed at which the white matter in our brains declines. White matter is important for our cognition as it relays information between different regions of our brains, and thanks to past research, we know it declines as we age. The researchers in this study investigated the household incomes, last-known occupations, and socioeconomic trajectories of close to 800 adults, and then looked at how their brains performed using brain imaging and cognitive tests. They say a lower income was linked with signs of advanced white matter aging in the scans and poorer performance in the cognitive tests.
Journal/conference: JNeurosci
Link to research (DOI): 10.1523/JNEUROSCI.1231-23.2024
Organisation/s: Geneva University Hospitals, Switzerland
Funder: This work was supported by the Leenaards Foundation Scientific Prize,
awarded to S. Stringhini, M. Kliegel, and B. Draganski. The CoLaus|PsyCoLaus study was
supported by research grants from GlaxoSmithKline, the Faculty of Biology and Medicine of
Lausanne, the Swiss National Science Foundation (grants 3200B0_105993, 3200B0_118308,
33CSCO_122661, 33CS30_139468, 33CS30_148401, 33CS30_177535, 3247730_204523,
32003B_135679, 32003B_159780, 324730_192755, and CRSK-3_190185), the ERA-NET
iSEE project, and the Swiss Personalized Health Network (project: Swiss Ageing Citizen
Reference). LREN is very grateful to the ROGER DE SPOELBERCH and Partridge
Foundations for their generous financial support.
Media release
From: Society for Neuroscience
Socioeconomic status may contribute to how quickly the brain ages 
Researchers provide important insight on the interplay between socioeconomic status, aging brain structure integrity, and cognitive ability.
Recent studies have drawn links between socioeconomic status, brain structure, and cognitive abilities such as thinking, reasoning, and memory. While these studies have advanced our understanding of how these variables interact, much remains unknown. Stephanie Schrempft led a collaborative investigation out of the labs of Silvia Stringhini and Bogdan Draganski in which the household incomes, last-known occupations, and socioeconomic trajectory throughout the lives of nearly 800 adults were assessed alongside cognitive performance and new imaging indicators of brain white matter structure. White matter, which declines as we age, is important for cognitive function because it relays information between brain regions. The researchers found that people with lower household incomes had markers of advanced brain white matter aging. Lower income was also associated with diminished cognitive performance, and some markers for advanced white matter aging significantly contributed to this association. Notably, these brain structure differences did not contribute to cognition in participants with higher household incomes. These findings shed light on the relationship between our external living conditions and our brain structure and cognitive abilities as we age. At the very least, they emphasize the need for increased societal support for those with low incomes.
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