Topic
Every study covered on this subject, newest first.
Ten competing definitions of a good diet were applied to the same 6,470 adults. Eighteen people made the top quarter on all ten. Yet every score tracked the same ageing measure, and the methylation marks they left converged on the same biological pathways.
Nature Communications 17(1) · Tavares et al. · the German Centre for Neurodegenerative Diseases · 29 August 2026 · PMID 42668319
Across 152,004 people in 26 countries, the sustainability oriented diet index did track nutrient adequacy in the right direction. A plain count of how many food groups someone ate tracked it about twice as strongly.
The American Journal of · Hanley-Cook et al. · Ghent University · 26 August 2026 · PMID 42648644
Among 5,301 US adults aged 55 and over followed for about nine years, a low-carbohydrate eating pattern tracked with lower dementia risk and a low-fat one did not. But splitting each pattern by food quality reversed the picture within it: plant based and higher quality versions tracked with less dementia, animal based and lower quality versions with more. Inherited risk did not change the pattern.
The American Journal of · Chen et al. · Zhejiang University School of Medicine and Harvard T.H. Chan School of Public Health · 7 August 2026 · PMID 42567320
Newsletter
Each issue by email, when the newsletter launches. Leaving your address puts you on the list, nothing is sent yet.