Alzheimer's disease: 'Illness has taken over our lives'
9 December 2013 Last updated at 11:11 GMT
Health ministers from the G8 nations will meet in London this week to discuss the urgent challenge posed by dementia.
A total of 44 million people are already living with the condition around the world and that figure is predicted to soar to 76 million by 2030.
Viv Galley, whose husband Bill has advanced Alzheimer's disease, had told the BBC her story.