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ABO blood groups and numerous health outcomes. Some studies have found statistical associations between particular blood groups and the likelihood of developing certain diseases or medical complications.
Those findings can 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