One Blood

Blood type O is humanity’s ancestral blood, originating in Africa. As humans journeyed beyond African landscapes, new diets and diseases birthed variations—blood types A, B, and eventually AB—each reflecting specific environmental pressures. Agriculture gave rise to type A, pastoral life favored type B, and intermingling of cultures introduced type AB. Yet despite these variations, blood still flows seamlessly across racial and geographic boundaries.

Skin pigmentation, frequently mistaken for deeper biological divides, is actually a simple response to climate: darker skin to shield against harsh UV rays near the equator, lighter tones evolving in colder climates to ensure sufficient vitamin D production. In fact, global maps of skin color mirror climatic zones perfectly. Thus, skin color indicates environmental adaptation, not genetic separation.