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Ultra-processed food intake, cognitive function, and dementia risk: A cross-sectional study of middle-aged and older
Barbara R Cardoso1,2, Euridice Martinez Steele3,4, Barbara Brayner5
1Department of Nutrition Dietetics and Food, Monash University Clayton VIC Australia.
Introduction:
Ultra-processed food (UPF) consumption is linked to over 30 adverse health outcomes, including several risk factors for dementia such as cardiovascular disease, type 2 diabetes, and obesity. We aimed to examine the association of UPF consumption with cognitive performance and dementia risk scores, and whether these associations are independent of overall diet quality.
Methods:
This cross-sectional analysis assessed 2,192 Australian dementia-free adults aged 40-70 years. Diet was assessed using a validated food frequency questionnaire and classified according to the Nova system. Cognitive function was measured using the Cogstate Brief Battery, and dementia risk was estimated with the CAIDE tool.
Results:
Each 10% increase in UPF intake was associated with lower attention scores (-0.05 points) and higher dementia risk (+0.24 points), independent of Mediterranean diet adherence.
Discussion:
Higher UPF consumption is associated with poorer attention and increased modifiable dementia risk, independent of overall diet quality.
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