Express.co.uk | Dementia and Alzheimer's are leading cause of death: Conditions overtake heart disease Express.co.uk For females, the leading cause of death was dementia and Alzheimer's disease accounting for 15.2 per cent of all female deaths, up from 13.4 per cent in 2014. Alzheimer's disease is the most common type of dementia, affecting an estimated 850,000 ... |