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I’m Irish on both sides of my family. Both of my children are O ~~~~~~~~~~ Your blood type isn't random. If you carry Irish ancestry, there's a reason blood type O runs through your family at rates higher than almost any other population on earth. ☘️ Ireland has one of the highest concentrations of blood type O in the world, and geneticists believe it wasn't chance. It was selection. Over thousands of years, the Irish genome was shaped by waves of plague, famine, and infection that blood type O carriers survived at measurably higher rates. The immune profile that came with it became one of the most common biological inheritances in the Irish bloodline. That blood running through you right now carries the signature of every ancestor who made it through. Save this post, because this is your biology, not just your history. #IrishAmerican #Ireland #IrishAncestry #FamilyHistory #Genetics