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[quote=Anonymous][quote=Anonymous][quote=Anonymous]I’ve heard of people claiming their blood type changed. I think most are simply cases of people misremembering or not knowing in the first place but thinking they do. My own husband was told by his parents that he was O- but found out that he’s actually O+.

Your blood type doesn’t randomly change. It is genetic. It stays the same throughout your life like your eye color.[/quote]

Eye color can change. mine has - faded. Not uncommon just as hair loses melanin [/quote]
What I meant is that they’re not going to drastically randomly change to a different color in adults (without a medical condition). They’re still going to be the same color that your genotype has determined. Brown eyes aren’t going to turn blue, blue eyes aren’t going to turn brown, etc. A lighter or darker shade of brown is still brown, a lighter or darker shade of blue is still blue, etc.

It’s the same thing for blood type. Type A isn’t going to change to type O, type O isn’t going to change to type AB, etc. Your genotype (AA, AO, OO, AB, etc.) has determined what your blood type is, and (under normal circumstances) it’s going to stay the same throughout your life.[/quote]

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