Home Cooking Lowers Dementia Risk

A longitudinal study of about 11,000 Japanese adults aged 65+ found that cooking at home was associated with a substantially lower incidence of dementia over six years — up to a 30% reduction for regular cooks, and unexpectedly large (~70%) reduction among those with lower baseline culinary skill. Researchers posit the benefit comes from combined physical activity (shopping, standing, cleaning) and cognitive demands (meal planning, decision making, following recipes). — If causal, this suggests low‑cost, scalable prevention strategies (community cooking programs, caregiver training, social meal initiatives) could materially lower dementia incidence and shift aging policy toward activity‑based interventions.