Dementia: An Explanation of Causes and Risks

Dementia is a term used to describe several diseases that negatively impact memory, thinking, and the ability to perform daily activities. Dementia progresses over time. It primarily affects older people, but not everyone develops dementia as they age. Factors that increase the risk of developing dementia include: age (dementia is more common among those aged 65 and older); high blood pressure (hypertension); high blood sugar levels (diabetes); overweight or obesity; smoking; excessive alcohol consumption; lack of physical activity; social isolation; depression.