The research, published Aug. 5 in Neurology Open Access, found that not smoking, maintaining healthy blood pressure and avoiding diabetes between ages 48 and 68 leads to, on average, nearly 13 additional years of life without dementia. On average, people who had none of the risk factors lived nearly 13 years longer without dementia than people who smoked, had high blood pressure and had diabetes. Among people who had these risk factors, women lived dementia free longer than men, and white people lived longer without dementia than Black people.