Alzheimer's brain (left) compared with healthy brain (right)
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Dementia: The growing global problem

With a globally ageing population, the negative impact of dementia on the health and wealth of the world's population is set to grow dramatically over the next half century.

Here the BBC's medical correspondent, Fergus Walsh explores the size of the future problem.

  • 10 Dec 2013
  • From the section Health
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