Monash University Reveals Cognitive Impact
Research led by Monash University, alongside the University of S3o Paulo and Deakin University, uncovers the detrimental effects of diets high in ultra-processed foods (UPFs) on cognitive focus. The study, involving more than 2,100 Australian adults free of dementia, was published in the journal Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring on 23rd April.
Dr Barbara Cardoso from Monash University stated that “a 10 per cent increase in UPFs is roughly equivalent to adding a standard packet of chips to your daily diet.” Such an increase correlates with a measurable drop in attention span, impacting individuals regardless of their overall diet quality.
The participants in the study consumed about 41 per cent of their daily energy from UPFs, closely matching the national Australian average of 42 per cent. This reflects the widespread consumption of UPFs like packaged snacks, soft drinks, and ready-made meals.
Cognitive Decline and UPFs
Food processing often destroys natural food structures and introduces potentially harmful additives. Dr Cardoso explained, “These additives suggest the link between diet and cognitive function extends beyond just missing out on foods known as healthy.” The study reveals that even those following a Mediterranean diet are not entirely protected from these effects.
While a direct link between UPFs and memory loss was not established, an increase in dementia risk factors such as high blood pressure and obesity was observed. Attention span serves as a foundation for cognitive functions like learning and problem-solving. The importance of considering food processing in dietary guidelines and public health policies is highlighted by these findings.
Dr Cardoso highlighted, “In clinical terms, a small change in UPF intake can lead to lower scores on standardised tests measuring visual attention and processing speed.” The study received support from the National Health and Medical Research Council and the Alzheimer’s Association.
