Eating less, exercising more, and quitting alcohol and cigarettes could slash dementia rates by up to 40%, major study finds

Hundreds of thousands of people could ward off dementia by adopting a healthy lifestyle, a major study has found.

Some 40 per cent of cases could be avoided or delayed, a comprehensive review of the evidence concludes.

Eating less, exercising more, and cutting out alcohol and cigarettes significantly reduce the risk of developing dementia in later life, researchers said.

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