PLAYING puzzles, card games, reading books and engaging in other mentally stimulating activities later in life can help delay the onset of Alzheimer’s dementia by five years, researchers found.

Findings published in Neurology last week analyzed nearly 2,000 patients about 80 years old on average and free of dementia at the study start. During seven years of follow-up with annual exams and cognitive tests, some 457 people about 90 years old on average developed dementia, or “impaired ability to remember, think, or make decisions that interferes with doing everyday activities,” according to the U.S. Centers for Disease Control and Prevention (CDC).

Study participants answered questions about cognitive activity when they were kids, adults and in middle age, and also how often they read books, played board games or puzzles over the year. Respondents who were the most mentally active typically developed dementia by age 94, compared to those least mentally active who usually developed dementia by 89, or some five years sooner. The difference upheld after researchers controlled for other factors potentially confounding dementia risk like sex and education, according to a related news release.

“The good news is that it’s never too late to start doing the kinds of inexpensive, accessible activities we looked at in our study,” study author Robert S. Wilson of Rush University Medical Center in Chicago, said in a news release posted by the American Academy of Neurology. “Our findings suggest it may be beneficial to start doing these things, even in your 80s, to delay the onset of Alzheimer’s dementia.”

“Our study shows that people who engage in more cognitively stimulating activities may be delaying the age at which they develop dementia,” Wilson said. “Our research suggests that the link between cognitive activity and the age at which a person developed dementia is mainly driven by the activities you do later in life.”(SD-Agencies)