The brain-training industry is huge, and growing. forecasts suggest people will spend some 4-10 billion of dollars on these types of games by 2020. Not all are designed specifically to keep dementia at bay. Some are designed to improve your memory or IQ, for example. In any case, there is little evidence to suggest they…

via The first study to find brain games prevent dementia shows why statistics don’t tell the whole story — Quartz

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