A new study finds your blood type could influence your risk of early stroke before age 60.

By Aniket Chakraborty July 7, 2025 Arrow HEALTH & WELLNESS

Individuals with blood group A have a 16% higher chance of early ischemic stroke.

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Blood type O appears to offer protection, with a 12% lower risk of early stroke.

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Researchers analyzed genetic data from over 17,000 early stroke patients.

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The link between blood type and stroke risk lies in clotting-related proteins.

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Type A blood is associated with elevated levels of von Willebrand factor and factor VIII.

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Blood types B and AB showed weaker associations, but some risk persists.

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Stroke risk varies with age—clotting proteins in youth, artery blockages later in life.

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This genetic risk was notably higher for type A individuals in East Asian populations.

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Experts say it's a risk factor—not a sentence—so awareness, not panic, is key.

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