Improving vision may have a help fend off dementia, according to recent research. Poor eyesight has been added to the list of “modifiable risk factors” – including smoking and high blood pressure – that can prevent as many as 62% of cases, it suggests. Of that total, eye examinations, glasses and cataract operations can have only a tiny proportional impact, but the study’s lead author says they represent relatively easy and inexpensive solutions.

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