One particular type of mental exercise may succeed at doing what nothing else has before: putting off dementia. A new, 10-year study showed that speed training—computer exercises that get users to visually process information more quickly—beat out memory and reasoning exercises, two other popular brain-training techniques. Researchers found that a total of 11 to 14 hours of speed training has the potential to cut by as much as 48% the risk of developing dementia 10 years later. ...
Between 11 and 14 hours of app-based speed training over five weeks may reduce the risk of dementia by 48% 10 years later, according to a study. Researchers investigated 2,832 healthy patients aged 65-94 and recommended speed training from the age of 50 to benefit. The study found that those who took part in an app or online course were more likely than others to improve their cognitive function at least three months after completing it.