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Dementia funding 'should double'

11 December 2013 Last updated at 19:32 GMT

Health ministers from the world's richest countries say they want to achieve a cure or at least a new treatment for dementia by 2025.

They have been meeting in London to decide how to tackle what is being called a dementia time-bomb.

The illness already affects 44 million people across the globe but there are warnings that figure could treble over the next 40 years as life expectancy continues to rise.

Fergus Walsh reports.