What Is The Rarest Blood

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What Is The Rarest Blood
What Is The Rarest Blood

Video: What Is The Rarest Blood

Video: The Rarest Blood Type On Earth | Responding To Comments Ep. 23 2022, December

As you know, there are four types of human blood. Scientists established this fact at the beginning of the 20th century. The blood of different groups differs in the content of special antigen substances in it.

What is the rarest blood
What is the rarest blood

What blood group is the rarest

There are four blood groups, indicated by the absence or content of special substances (antigens) of type A and B in it: I - 0 (antigens are absent), II - A (type A antigen is present), III - B (type B antigen is present in the blood), IV - AB (both types of these substances are contained).

Blood is also classified by the presence or absence of the Rh factor in it. The Rh factor is an antigen on the surface of red blood cells. The rarest blood group is determined by both indicators. According to statistics, the fourth group with a negative Rh factor has this status. It has less than one percent of the world's population (mostly women).

It is allowed to transfuse only blood of the same group and rhesus from the patient and the donor. If absolutely necessary, it is allowed to transfuse the first blood group with the same Rh factor to other groups.

How did the fourth blood group appear?

According to scientists, in ancient times, almost all people had one blood group - the first, and therefore it is most common on most continents. Thanks to mutations, the second and third blood groups arose. Such mutations have arisen due to the restructuring of the body of primitive man, who learned to eat, in addition to meat, fish, berries, leaves, vegetables. According to scientists, the third blood group appeared on the territory of South Asian countries, whose inhabitants ate products obtained from domestic animals (milk, cottage cheese, cheese, heat-treated meat, and so on).

The rarest fourth group appeared no more than 10 centuries ago, the reason for its occurrence remains still unknown. However, there are suggestions that it arose as a result of the mixing of races. Since such marriages are rare, there are very few people with the fourth blood group. There is also an opinion that this type of blood appeared due to a significant increase over the past five hundred years in the human diet of heat-treated foods, as well as synthetic and semi-synthetic food.

According to one version, the fourth blood group was formed as a result of damage to the human body by viral infections.

People with the fourth blood group have a unique ability to adapt to nutritional conditions and the environment, and their body has a high resistance to disease. Such people have a sensitive digestive system and a very tolerant immune system.

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