The first blood group was the most dangerous
The first blood group is the most dangerous. Scientists from Japan came to this conclusion. They found that people with the first blood group were three times more likely to die from severe injuries.
Researchers found that the blood of the first group had a reduced content of von Willebrand factor, or plasma glycoprotein. This leads to poor coagulation. With severe injuries and blood loss, a person with the first blood group has the lowest chance of survival.
However, the first blood group is still the most versatile, as it can be used for transfusions to people with any other blood group.
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