Ultra-processed meats and sugar-sweetened beverages are the most harmful junk foods for brain health, according to Virginia Tech researchers. Using data from the University of Michigan’s Health and Retirement Study, they tracked 4,750 older Americans over seven years to investigate diet’s effect on cognition.
Individuals consuming at least one extra serving of ultra-processed animal products daily showed a 17% increased risk of cognitive impairments, including conditions related to dementia such as Alzheimer’s. Likewise, daily sugary beverage consumption—including sodas and iced teas—were associated with a 6% increased risk.
Surprisingly, Other Ultra-Processed Foods Pose Less Cognitive Risk
The study found no significant link between overall ultra-processed food intake and cognitive decline. Other categories like spreads, sweets, snacks, and ready meals did not show the same degree of cognitive association as processed meats and sugary drinks.
Cognitive Function Was Measured Using Standardized Memory and Mental Tests
Participants underwent tests assessing immediate and delayed recall, numerical processing, and more, allowing researchers to identify gradual cognitive decline. By its conclusion, 1,363 participants exhibited cognitive impairment, underscoring the relevance of dietary impact on brain health.
Practical Dietary Advice from the Study
Researchers emphasize moderation and making balanced, informed dietary choices. Brenda Davy, co-author and nutrition professor at Virginia Tech, recommends cooking at home and opting for healthier alternatives to ultra-processed meats and sugary drinks. These simple steps may help protect brain function.
Addressing Convenience and Dietary Habits
Ultra-processed foods appeal due to convenience, especially for busy individuals with limited cooking skills. The researchers suggest that cooking classes could play a pivotal role in helping people make healthier choices, bridging the gap between diet plans and practical meal preparation.
A Wake-Up Call for Aging Populations
With declines linked specifically to ultra-processed meats and sugary beverages, this study highlights an actionable avenue for maintaining cognitive health amid an aging population. Physicians can use these findings to advise patients about dietary risks and prevention strategies.
