Association of Daily Step Count and Intensity With Incident Dementia in 78 430 Adults Living in the UK

This large-scale cohort study assessed how daily step counts and their intensity impact dementia risk in adults aged 40–79. Data from 78,430 participants wearing accelerometers revealed that walking up to 9,826 steps daily was linked to a 50% lower risk of developing dementia. Even modest step counts of 3,826 daily steps reduced dementia risk by 25%. Walking at a faster pace provided stronger protective effects than casual walking. These findings emphasize the role of regular physical activity in preventing cognitive decline and promoting long-term brain health.

Incorporate daily walking into your routine, aiming for 7,000–10,000 steps at a brisk pace for optimal brain health benefits. Even lower step counts can reduce dementia risk, making walking accessible for all fitness levels. The study's robust design supports general applicability, but results may vary based on individual health factors.