Prevention breakthroughs: 45% of dementia potentially preventable

Lancet Commission 2026 adds LDL and vision loss to 14 modifiable risk factors. Lifestyle interventions (diet, exercise, hearing aids, social connection) show strong protective effects. Stroke-dementia link highlighted: 3x risk in first year, 80% long-term increase. New study on combined physical exercise and cognitive stimulation adds to evidence. New: Global perspective shows risk factor clusters similar worldwide, supporting tailored prevention. Hearing loss-dementia link balanced overview.