People suffering from Alzheimer's disease or hoping to avoid the possibility of getting it should keep a healthy diet and exercise regularly, it is said.
Neil Hunt, the chief executive of the Alzheimer's Society, said the "jury is still out" on such things as brain training devices and games, with tests on the subject ongoing.
He recommends that if people have half an hour to go out and have the chance to do brain training or exercise, people should go for the latter option if they want to put their mind at ease over fears of dementia.
Mr Hunt said of popular gaming systems: "We would like to see more research in this field, in that way people would be able to quantify and certainly come out strongly for or against [brain trainers]."
Late last month, Which? experts stated that despite statements from Nintendo regarding its software, there is "no evidence" that such games have any functional impact on a person's quality of life.
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