Illustrated News
Mediterranean Diet May Help Offset High Genetic Risk for Dementia
September 4, 2025
Quick Facts
- Study tracked 5,700+ people over 34 years, published in Nature Medicine
- Mediterranean diet reduced dementia risk by 35% in those with highest genetic risk (APOE4)
- Supports 'precision nutrition'—tailored diets based on individual genetic profiles
Why It Matters
Diet may override genetic predisposition to dementia, offering hope for prevention through lifestyle choices.
A study using data from more than 5,700 people gathered over 34 years found that the participants who stuck to the Mediterranean diet were less likely to wind up with dementia.
The groundbreaking study published in Nature Medicine suggests that adhering to a Mediterranean-style diet can significantly lower dementia risk, even for individuals at elevated genetic risk
In particular, participants carrying two copies of the APOE4 gene variant—the highest-known genetic risk factor for Alzheimer’s, who closely followed the diet experienced a 35% reduction in dementia risk.
The protective effect appears strongest in these high-risk individuals, indicating that dietary choices may override genetic predispositions to some extent. This supports the emerging concept of precision nutrition, where customized dietary plans could be tailored to an individual’s genetic background to enhance brain health.
Source: Self
https://www.self.com/story/mediterranean-diet-dementia-alzheimers-risk