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Nutrition availability
Safety and infrastructure
Economic stability
Two people with the same blood type can have vastly different life expectancies depending on these external conditions.
This further weakens the idea that blood type is a major determinant of longevity.
Aging is not destiny—it is a process
One of the most important modern understandings in health science is that aging is influenced but not fully predetermined.
While genetics provide a baseline, lifestyle choices can significantly shape how well and how long a person lives.
Many people who reach 100 years old do not do so because of a single biological trait, but because of cumulative healthy habits over decades.
Conclusion: what the science really says
The claim that people with a certain blood type are more likely to reach 100 is an oversimplification of a much more complex scientific reality.
While some studies explore small associations between blood types and specific health risks, there is no strong or consistent evidence that any blood type directly determines lifespan.
Longevity is shaped by a wide range of factors, including genetics, lifestyle, environment, and healthcare—not a single biological classification.
Blood type may be one small piece of a very large puzzle, but it is far from the deciding factor in whether someone becomes a centenarian.
In the end, the science is clear on one thing: living longer is less about the type of blood you have, and far more about how you live your life.