Low-Inflammation Diet Cuts Dementia Risk 29% in High-Biomarker Adults
Updated
Updated · The Washington Post · Jul 1
Low-Inflammation Diet Cuts Dementia Risk 29% in High-Biomarker Adults
3 articles · Updated · The Washington Post · Jul 1
Summary
Nearly 1,900 adults aged 60 and older were tracked for 15 years, and those with elevated Alzheimer’s-related biomarkers who ate lower-inflammatory diets were less likely to develop dementia.
A 29% lower risk appeared in participants with high p-tau217, while similar links were seen with high GFAP and NfL—blood markers tied to neuroinflammation and nerve-cell injury.
Researchers scored diets using Mediterranean-style, healthy-eating and inflammatory-potential indexes; all three healthy patterns were linked to lower dementia risk, but the low-inflammation pattern was most consistent in higher-risk groups.
The JAMA Network Open study was observational, relied on self-reported diets and lacked racial and ethnic diversity, so it cannot prove diet prevents dementia.
Experts said the findings add to evidence that plant-forward eating and limiting ultra-processed foods may support brain health even when early dementia-related changes are already present.
Brain damage from dementia can start at 45. Can changing your diet in your 60s still save your mind?
With early dementia markers now in blood tests, how should we rethink our approach to brain health and aging?
If you carry the dementia gene, could a standard healthy diet be the wrong choice for your brain?
Anti-Inflammatory Diet Cuts Dementia Risk: New Study Shows 10-Year Brain Health Gains, Especially for High-Risk Individuals
Overview
A major study published in June 2026 found that following an anti-inflammatory diet can significantly lower the risk of dementia, especially for people with higher levels of Alzheimer’s-related warning proteins in their blood. The research showed that the anti-inflammatory rEDII diet was the only eating pattern to consistently benefit those at higher risk, helping them lose less dementia-free time over 10 years. While other healthy diets like the Mediterranean diet helped people at lower risk, the anti-inflammatory approach stood out for its strong and consistent protection, making it a promising strategy for preventing cognitive decline.