Rather than an expensive drug, a cheap and simple brain-training exercise was found to significantly decrease dementia rates

A simple brain-training exercise could reduce people’s risk of developing dementia by 25%, a study said on Monday, but with outside researchers expressing caution in interpreting the results.

There are vast amounts of brain-training games and apps which claim to fight off cognitive decline, although there has been little high-quality, long-term research proving their effectiveness.

The new study is a randomised controlled trial − considered the gold standard for medical research − which first began enrolling participants in the late 1990s.

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