The Scientific Journal JAMA Neurology recently published an article in which increased mental stimulation later in life was shown to correlate with a decrease in the risk for cognitive impairment. The authors specifically looked at playing games as a way to prevent mild cognitive impairment, such as dementia, after age 70. The study further looked at people who carried the Apolipoprotein E (APOE) ε4 genotype, known to be associated with increased risk of dementia. Individuals who carried APOE ε4 still benefited from playing games. The study also looked at the influence of reading, playing computer games and crafting, all of which helped to lessen the risk of cognitive impairment.
The article can be read in its entirety here.