A decade-long Canadian study has found that high consumption of ultra-processed foods is linked to an increased risk of stroke and dementia. Researchers observed that middle-aged adults eating these foods showed more signs of brain damage, which could serve as early warning signs for serious neurological issues.
What are the health risks?
Using magnetic resonance imaging (MRI) to scan nearly 9,000 participants, researchers detected tiny areas of brain damage more frequently in those with high intake levels. These changes often produce no obvious symptoms but can appear years before clinical stroke or memory problems begin.
Key findings from the study include:
- Participants with the highest intake were 40% more likely to show brain changes.
- High consumption was associated with increased body fat and deep belly fat.
- Abdominal fat is linked to inflammation and blood vessel damage.
How does diet affect the brain?
Ultra-processed foods include items like sugary breakfast cereals, soft drinks, instant noodles, packaged snacks, and ready-to-eat frozen meals. The study, published in JAMA Network Open, focused on Canadians aged 35 to 69 who had no prior history of heart disease.
Lead author Russell J. de Souza noted the unexpected nature of the results, stating, "Usually, this kind of damage is associated with conditions we hear about and treat at a much older age."
The association between ultra-processed foods and brain damage appeared notably stronger in women, who in the highest consumption group were nearly twice as likely to show signs of damage compared to those with the lowest intake.
FAQ
Does this study prove processed foods cause brain damage?
No, the study shows an association rather than direct causality, meaning researchers cannot confirm if the diet caused the damage or if other factors are involved.
What kind of foods are considered ultra-processed?
Examples include packaged snack foods, sugary cereals, instant noodles, soft drinks, and frozen ready-to-eat meals.
