Can Your Blood Type Affect How Long You Live? What Scientists Are Discovering About Longevity

Despite these fascinating theories, most scientists caution that the influence of blood type on longevity appears to be small—too small to outweigh the lifestyle factors that truly shape health outcomes.

Diet, physical activity, stress levels, access to healthcare, and social connections all play a much larger role in determining how long we live. A person with the healthiest blood type could still face serious health challenges if they smoke, eat poorly, or live a sedentary life. Conversely, someone with a theoretically “higher-risk” blood type can still enjoy a long, vibrant life through healthy habits and preventive care.

Another challenge is that blood type frequencies vary greatly among populations. A study conducted in Japan, for example, may show a different distribution than one done in the United States or Europe, simply because of genetics and environmental differences. That makes it difficult to draw universal conclusions about which blood type might be “best” for longevity.

In short, while the science is interesting, it’s not destiny.

What This Means for You

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