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92 year old Ali Haydar Cilasun (R) holds the hand of carer Guven Asmacik (L) in his room at an Aliacare home for the elderly in Berlin on October 8, 2013. The Aliacare home offers bilingual services for German and Turkish elderly people. AFP PHOTO / ODD ANDERSEN        (Photo credit should read ODD ANDERSEN/AFP/Getty Images)
92 year old Ali Haydar Cilasun (R) holds the hand of carer Guven Asmacik (L) in his room at an Aliacare home for the elderly in Berlin on October 8, 2013. The Aliacare home offers bilingual services for German and Turkish elderly people. AFP PHOTO / ODD ANDERSEN        (Photo credit should read ODD ANDERSEN/AFP/Getty Images)

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What is dementia?

47.5 million people around the world suffer from the disease, which leads to a loss of memory and intellectual abilities.

What is dementia?

47.5 million people around the world suffer from the disease, which leads to a loss of memory and intellectual abilities.