The study wanted to demonstrate the existence of a link between blood type and the risk of early stroke. For the purposes of the latter, 16,927 people who have suffered a stroke. But also, 576,353 people who had not suffered from it were the subject of numerous analyses… Among the group of people who had suffered a stroke, 5,825 people had one before the age of 60. And 9,269 people had a late stroke, after the age of 60. So the question remains whether blood type plays a role in strokes before the age of 60. We tell you everything! The risk of early stroke according to blood group Scientists have sought to examine all the chromosomes. This is to identify genetic variants associated with stroke. So they found a link between early stroke and the area of the chromosome that has a special gene. Which determines the different blood groups: A, AB, B or O. They then sorted the people according to their blood groups A, AB, B and O. The scientists continued their study by comparing the percentage of the different blood groups in early, late and non-stroke victims. According to Braxton D. Mitchell, doctor at the University of Maryland School of Medicine and author of the study: “Blood types other than blood type O have already been associated with risk of early stroke, but the results from our meta-analysis showed a stronger link between these blood groups with early stroke compared to late stroke, and linking the risk mainly to blood group A”. Stroke: The group with the greatest risk The scientists who conducted the study found that people who suffered an early stroke most often belong to blood type A. And those who have the lowest risk of suffering an early stroke are blood group O. And this, compared to people who suffered a late stroke or those who did not. In second position, group B remains one of the most likely to contract an early stroke, but also late. The researchers clarified that the increased risk was still very low. And that people with type A should not be more worried than others. “We still don’t know why blood type A would confer a higher risk, but it probably has something to do with blood clotting factors like platelets and the cells that line blood vessels as well as other circulating proteins. , all of which play a role in the development of blood clots,” Dr. Kittner said. The group with the least risk The researchers then did the study and concluded that people with blood group A have a 16% higher risk of having an early stroke than people with other blood groups. People with blood type O have a 12% lower risk of having a stroke. “This work deepens our understanding of the development and early changes of stroke,” said Jennifer Juhl Majersik, MD, MS, of the University of Utah and fellow of the American Academy of Neurology. She wrote an editorial accompanying the study. “Future research is needed to help develop a more accurate understanding of how stroke develops. This could lead to targeted preventative treatments for early strokes, which could lead to less disability during people’s most productive years.”