easily become exaggerated when they move from scientific literature to social media.
An association between a blood group and a particular health outcome does not establish that the blood type itself determines overall longevity or controls the biological rate of aging.
Population studies are influenced by many factors, including genetics, geography, ancestry, diet, healthcare access, smoking, physical activity, socioeconomic circumstances, and underlying medical conditions.
That makes statements such as “this blood type ages slower” far more definitive than the evidence supports.
Blood Type and Longevity Are Not the Same Thing
It is also important to distinguish longevity from biological aging.
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