Estimate: 135 million worldwide with dementia by 2050 Published: December 5, 2013

New estimates suggest that dementia is going to be an even bigger global problem than previously thought, reports USA Today.

A policy brief released Wednesday from Alzheimer's Disease International, a federation of advocacy and research organizations, estimates that 135 million people worldwide will be living with dementia by 2050.

That revised prediction is 17% above previous ones, largely driven by increases in China and sub-Saharan Africa.

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