Blood type O is a common blood type. Type O blood is a blood group without A antigen and B antigen. People with type O blood are universal blood transfusions and can transfuse other blood types. It has a long history, appearing between 60,000 and 40,000 BC, and has a unique character and temperament.
There are only two blood types actually used in clinical medicine, ABO type, which can be divided into A type, B type, O type and AB type. The other is RH type, which is divided into RH positive and RH negative. RH negative is commonly known as panda blood. Among so many blood types, type O blood has no advantages over other blood types. One of them is that type O blood is universal blood transfusion, except panda blood.
This is unmatched by other blood types, but in the absence of special circumstances, blood transfusion is based on the principle of blood transfusion of the same blood type. That's why blood donors are asked if they are type O blood.
Because type O blood contains a component that promotes blood and reduces thrombosis, it has strong resistance to diseases, so people with type O blood are born with a resistance to diseases. But also has strong tolerance to gastric cancer and liver cancer. Besides, it is not easy to get Alzheimer's disease. From this point of view, type O blood has great advantages over other blood types.