The truth about blood type in your body

Blood type has been shown to affect health: people with O blood are less likely to have cardiovascular disease and cancer than other blood types.

Blood type is a part of the body but not everyone knows. According to the survey, 35-50% of Westerners don't even know their blood type. Here are some interesting facts about the Blood Daily blood group.

More than 2 elements

When it comes to blood type, we usually only consider whether it is group A, B, AB or O and is the type of addition or subtraction. However, your exact blood type is much more complicated than that.

Red blood cells are covered by antigens. 600 types have been determined to account for only one-fourth of the common antigens. They are transmitted from parents to children, divided into 35 types of blood groups, most commonly ABO and Rhesus (Rh). Among 61 Rh antigens , D antigen is the most important.

When transfusion, we only receive erythrocytes corresponding to the antigens of the ABO and Rh groups. Blood group A, B, O will produce antibodies against antigen A or B not derived from their body, meaning blood type A cannot receive blood group B and vice versa. People with blood type O lack antigen A and B should produce antibodies against both; meanwhile, blood type AB does not appear antibodies.

Similarly, people without D antigens do not receive blood, and people with D antigens use both D-and D + blood.

In general, the O + blood group (blood type O has the antigen D or Rh +) gives the most and the AB + group gets the most.

There are countless different types of antigens.(Photo: Medical Daily).

The rarest blood type

You must have heard that AB is the rarest blood type. However, this is only true when considering 8 combinations of A, B, O and D + or D- . According to Stanford Medical University, about 0.6% of the population carries AB- blood type .

There are countless different types of antigens. Combining all the factors, we find people with extremely rare blood groups. For example, the man named Thomas is so special that he does not own any Rhesus antigens. He became one of 40 people in the world who did not carry Rh and could donate blood to anyone in the rare Rh group. However, when blood is needed, Thomas only receives no Rh. Besides him, there are only 5 people in the world.

Incompatibility issue

Incompatibility is a complicated issue. Unlike the ABO system, people without antigen D or Rh antigens do not automatically reject antigen-containing blood. Only after exposure to Rh + blood does the body produce antibodies against antigens. Thus, theoretically, the Rh-type blood can at least get Rh + blood without any problems. However, for safety reasons, this option is almost never considered.

The most common case is the mother Rh- who gives birth to a Rh + bloody child. If it is the first time, the fetus will be safe but from the second time, the mother's body is more likely to form antigens, cross the placenta to attack the baby's blood in the abdomen, leading to hemolytic disease. . This phenomenon also occurs when the fetus is not compatible with the mother about the ABO group but is milder and more rare.

Luckily, Rh incompatibility problems are solved with drugs or antibodies that block the mother's ability to form Rh.

Regulations of human character

In Japan, blood type is especially important. The concept of the ABO system was first introduced in the 20th century. Shortly thereafter, in 1927, Professor Takeji Furukawa in Tokyo published articles suggesting that the blood group predicted human personality. His argument was quickly forgotten, but was reiterated by author and journalist Masahiko Nomi in the 1970s. To this day, Japanese people are still very concerned about blood type, even relying on it to judge you. Boys and girls are good for you. However, most studies on this issue are not accurate enough to be reliable.

Blood type can predict human personality?

Nutrition

In 1996, American author Peter J. D'Adamo released the book Eat Right according to the big resonant blood group. According to him, blood type O people should eat protein-rich foods such as red meat, poultry, fish and blood type A should do the opposite and avoid all kinds of meat. However, D'Adamo's scientific evidence is far less convincing than the blood group argument that defines human character.

Health risk

Scientists have shown blood type affects human health. People who are not blood type O have more blood clotting factors, which are more easily prone to venous thrombosis. Recently, a study showed that other blood groups had a higher risk of heart disease and cancer than blood type O.