Because blood type antigens sit on the surface of cells, they can influence how the body interacts with bacteria, viruses, and even abnormal cells. Research has shown that some blood types may be more or less susceptible to certain infections and conditions. For example, certain bacteria attach more easily to cells of specific blood types, potentially making those individuals more vulnerable to infection. These subtle variations might, over a lifetime, influence overall health and aging.
Why the Evidence Remains Uncertain
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