Ultra-processed foods are pervasive in Western diets, and new research has linked these industrially produced meals, drinks, and snacks to poorer brain health. Specifically, the study explored the correlation between attention, dementia risk, and the proportion of ultra-processed foods in the diets of more than 2,000 dementia-free Australians aged 40–70. Nutritional biochemist Barbara Cardoso from Monash University in Australia led the analysis of survey data from 2,192 participants (mostly