Dementia could be prevented by simply wearing a hearing aid or having surgery to improve eyesight, the UK's Daily Mail reports.
There is still no drug to prevent the deterioration of mental faculties, but a study of more than 5,000 people found that suggest that undergoing cataract surgery could halve the rate of cognitive decline.
And wearing a hearing aid had an even more dramatic effect, reducing memory decline and thinking skills by more than 75 percent, even preventing many cases of dementia such as Alzheimer’s disease.
Dr Asri Maharani, co-author of the studies by Manchester University, said: "Age is one of the most important factors implicated in cognitive decline.
"We find that hearing and vision interventions may slow it down and perhaps prevent some cases of dementia, which is exciting – though we can’t say yet that this is a causal relationship."
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