A new study suggests that ultra-processed foods may be doing more than harming physical health—they could also affect brain function. Researchers from Harvard T.H. Chan School of Public Health found that older adults who consumed the highest amounts of ultra-processed foods, such as chips, biscuits, and sugary drinks, had a 58% higher risk of developing dementia and a 46% higher risk of cognitive impairment compared to those who ate the least. The study followed more than 5,300 adults aged 50 and older for nearly ten years. In contrast, diets rich in minimally processed foods were associated with a significantly lower risk of cognitive decline, highlighting the importance of healthy eating for long-term brain health.
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