A member asked:

Help please! could blood type affect someone's personality?

A doctor has provided 1 answer

No current evidence: This idea is especially popular in japan, that blood type can have a significant impact on personality. However, to date, there has been no statistically significant data to support this hypothesis. That said, most modern mental health professionals accept that personality is likely based in part on heredity (and not strictly experiences/environment) but blood type specifically not supported.

Answered 1/5/2014

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