Harvard Model Predicts Dementia Risk From 200 Exposures, Tripling Odds for High-Risk Groups
Updated
Updated · Harvard Crimson · Oct 15
Harvard Model Predicts Dementia Risk From 200 Exposures, Tripling Odds for High-Risk Groups
2 articles · Updated · Harvard Crimson · Oct 15
Summary
Nearly 200 environmental exposures fed a Harvard-built model that predicted Alzheimer’s and related dementia risk, with people scoring high on the tool facing almost three times the risk of low-score individuals.
UK Biobank data let researchers test five exposure domains—lifestyle, social, chemical, physical and ecosystems—showing environmental factors could predict risk alongside genetic variants.
Seventy-six exposures were strongly linked to dementia and 34 to Alzheimer’s, including smoking, poor sleep and nitrogen dioxide pollution, while exercise, living with a partner, and eating cheese and poultry tracked with lower risk.
The researchers said the findings are correlational, not causal, but could guide prevention policy, screening and clinical-trial recruitment; they are already pursuing follow-up experiments to test causation.