Blood group of individual linked to risk of having an early stroke

People with early stroke were more likely to have blood type A and less likely to have blood type O compared to people with late stroke and people without stroke. Both early and late stroke were also more likely to have blood type B compared to controls, according to a new meta-analysis led by University of Maryland School of Medicine (UMSOM) researchers. The meta-analysis included all available data from genetic studies focusing on ischemic strokes, which are caused by a blockage of blood flow to the brain, occurring in younger adults under age 60.

Findings of research were published in the journal Neurology.

"The number of people with early strokes is rising. These people are more likely to die from the life-threatening event, and survivors potentially face decades with disability. Despite this, there is little research on the causes of early strokes," said study co-principal investigator Steven J. Kittner, MD, MPH, Professor of Neurology at UMSOM and a neurologist with the University of Maryland Medical Center.

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Blood group of individual linked to risk of having an early stroke