The study found that regular physical exercise and keeping yourself mentally engaged can reduce the risk of Dementia in senior citizens

Dr Boyle’s research looked at 453 people, average age 84, who had annual physical and psychological evaluations until they died at an average age of 90, and found that having a strong sense of what direction your life was headed in, made people less likelier to have brain damage due by blockages in blood flow, which when occurs, can trigger a stroke or damage to brain tissue.
Lead author Dr Lei Yu, said, "Purpose in life differs for everyone and it is important to be thoughtful about what motivates you so you can engage in rewarding behaviors."
The study is published in the journal Stroke.
Source-Medindia