"The 24-year study included almost 9,200 people, 393 of whom had a stroke and 504 of whom developed cerebrovascular disease during the study period."

" gene were two to three times more likely to have a stroke than people without the defect."

"It's estimated that about 25 percent of northern Europeans carry the H63D gene defect, and it may be even more common in southern Europeans."

""This type of gene has previously been associated with brain diseases such as Alzheimer's disease, Parkinson's disease, ALS, multiple sclerosis and cerebrovascular disease, but this is the first time
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