Habits after 45 that add up to 13 years without dementia - scientists

Researchers found that the absence of diabetes, normal blood pressure, and not smoking between ages 45–65 are associated with an additional 12.6 years of life without dementia. Women with these risk factors lived 18.1 years without dementia, men 16.6. Scientists emphasize this is a correlation, not causation.

A group of researchers, whose work is reported by Science Alert, assessed the impact of three cardiovascular risk factors—blood pressure, diabetes, and smoking—on dementia-free life expectancy. According to the data, people aged 45 to 65 without these risk factors could, on average, expect an additional 12.6 years of life without dementia. The researchers found differences between sexes: women with the three risk factors lived an average of 18.1 years without dementia from the start of observation, while men lived 16.6 years. The scientists emphasize that the results show an association, not a direct causal relationship. The state of blood vessels in midlife may play a role in preserving cognitive function, as the brain is sensitive to changes in blood supply. The authors intend to continue research to determine to what extent lifestyle changes, including quitting smoking and normalizing blood pressure, can reduce the likelihood of dementia. The material highlights the importance of prevention after age 45.