The University of Exeter Medical School led the largest study of its kind, analyzing data from 3.2 million people around the world. They looked at 48 separate studies that observed how dementia is affected by a history of stroke and more recent stroke events.

“We found that a history of stroke increases dementia risk by around 70 percent, and recent strokes more than doubled the risk. Given how common both stroke and dementia are, this strong link is an important finding,” said Dr. Ilianna Lourida, from the University of Exeter Medical School. “Improvements in stroke prevention and post-stroke care may therefore play a key role in dementia prevention.”

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