Dementia can be predicted with 87% accuracy by a relatively simple test developed by researchers at the San Francisco VA Medical Center. The test is a combination of medical history, a physical exam, and cognitive testing. No special equipment is required and it can be given in a doctor's office or at the patient's home. The test measures the salient risk factors for dementia, including age 70 or more, low cognitive scores, poor dexterity or slow walking, a history of coronary artery bypass surgery, and a BMI of 18 or less.