Claims that a particular blood type can make someone age more slowly often attract attention online. The idea is appealing: if something as simple as being type A, B, AB, or O could influence how quickly the body ages, millions of people would immediately want to know where they stand.
But the reality is much more complicated.
There is currently no strong scientific evidence showing that one ABO blood type reliably makes people age more slowly than another. Blood type has important medical implications, particularly for blood transfusions and certain disease associations, but it should not be considered a biological
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