The study aimed to demonstrate the existence of a link between blood type and early stroke risk. 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 stroke before age 60. We tell you everything!
Risk of early stroke by blood group
Scientists have sought to examine all 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. What determines the different blood groups: A, AB, B or O.
They then sorted the people according to their blood types A, AB, B and O. The scientists continued their study by comparing the percentage of different blood groups in early stroke victims, late stroke victims and people who had not. .
According to Braxton D. Mitchell, a doctor at the University of Maryland School of Medicine and study author : “ Blood types other than blood group O have previously been associated with early stroke risk, but the results of 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
Scientists who conducted the study found that people with early stroke belong to the more often blood type A. And those who have the least risk of suffering an early stroke are blood group O. And this, compared to people who have suffered a late stroke or those who have 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 shouldn’t 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 said Dr. Kittner.
The group with the least risk
The researchers then did the study and concluded that people with blood type A have 16% higher risk to have an early stroke than subjects of other blood types. People with blood group O have 12% less risk to have a stroke.
” This work deepens our understanding of early stroke development and changes 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. “.