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

Arrow

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

2

Arrow

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

3

Arrow

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

4

Arrow

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

5

Arrow

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

6

Arrow

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

7

Arrow

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

8

Arrow

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

9

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

10