The Top Diets for Dementia Prevention According to a Major New Study
Every week, there’s a new conversation about a superfood, supplement or toxic ingredient for brain health. And as of right now, the significance of almost every one of these topics pales in contrast with the effect of overall dietary patterns. Now a landmark study from the UK Biobank further solidifies this point, tracking over 121,000 people across an average of nearly eleven years. These findings carry real implications for every one of us who cares about keeping our minds sharp as we age.
The research was published in Diabetes, Obesity and Metabolism in 2025 and examined how closely following four different dietary patterns affected the risk of developing all-cause dementia, Alzheimer’s disease, and vascular dementia in 121,521 participants (average age about 56, roughly 50/50 men and women). The four diets evaluated were the Mediterranean Diet Score (MDS), the MIND (Mediterranean‐DASH Intervention for Neurodegenerative Delay) diet, the Recommended Food Score (RFS), and the Healthy Diet Indicator (HDI). Participants were grouped into quartiles based on how closely their reported diets followed each pattern and were then tracked for about 11 years to look for whether they developed dementia. People with preexisting dementia were excluded from the trial. The research models accounted for smoking, physical activity levels, social interactions, BMI, preexisting medical issue and even air pollution exposure.
