Feb 8, 2023

Your Blood Type Affects Your Risk of Early Stroke, Scientists Find

You inherited your blood type from your ancestors. Now it seems that includes higher risk of a stroke (for some people).

People with one of the type A blood groups are more likely to have a stroke before the age of 60 compared with people with other blood types, research shows.

Blood types describe the rich variety of chemicals displayed on the surface of our red blood cells. Among the most familiar are those named A and B, which can be present together as AB, individually as A or B, or not present at all, as O.

Even within these major blood types, there are subtle variations arising from mutations in the genes responsible.

In a study published last year, genomics researchers uncovered a clear relationship between the gene for the A1 subgroup and early onset stroke.

Researchers compiled data from 48 genetic studies, which included roughly 17,000 people with a stroke and nearly 600,000 non-stroke controls. All participants were between 18 and 59 years of age.

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