A community resource
Nearly half of dementia may be preventable or delayable.
The evidence on preventing Alzheimer’s disease, from everyday risk factors to drug trials in people who have no symptoms yet, with every figure linked to its source.
45%Share of dementia linked to 14 modifiable risk factors (Lancet Commission 2024)
Risk factors
The 14 changeable risk factors linked to nearly half of dementia.
What works
What randomized trials and natural experiments show so far.
Prevention trials
Drug trials in people with Alzheimer’s changes but no symptoms.
Resources
Cohorts and datasets for prevention research.
APOE4 carriers
Sister site for people with two copies of APOE4, the highest-risk common genotype.
About
Who maintains this site and how sources are chosen.