Which blood group increases the risk of having a stroke before the age of 60?

A meta-analysis of 78 studies shows that the risk of having an early ischemic stroke is more or less important depending on the blood group.

Curious to know if there is a blood group that predisposes to the risk of stroke and in particular to ischemic stroke (the most common), researchers from the Faculty of Medicine at the University of Maryland (United States ) analyzed 48 studies involving almost 17,000 people with stroke and more than 570,000 people without stroke. They discovered that people with blood group A were more likely to have an early stroke (i.e. before age 60) than people with blood group O.

Bad luck for people in groups A + and A – (who still represent 45% of the population): they were already more likely to catch covid, now they are more at risk of having a stroke!

A risk increased by 18%

To reach this conclusion, the researchers divided the participants in the various studies into blood groups, then into three categories: early stroke, late stroke and no stroke. They found that people who had an early stroke were more likely to be blood group A and less likely to be blood type O, compared to people who had a stroke at a later age or people who were not. not having had a stroke. After adjusting for other risk factors, they concluded that:

  • People with type A had an 18% higher risk of early stroke than those with different blood types.
  • People with type O were 12% less likely to have an early stroke than those with other blood types.

Further study will be needed to understand why, but lead author Prof Braxton Michell thinks people with blood type A may be more likely to develop blood clots, which can lead to stroke.

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Source: Topsante.com by www.topsante.com.

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