The blood type is usually identified after the birth of a child; over time, it cannot change. There are four blood groups in total, and the first is the most common and universal of them.
Instructions
Step 1
Blood is divided into different groups depending on the presence or absence of antigens and the corresponding antibodies to them. Scientists have discovered 4 blood types. They are marked as follows: the first is 0 (I), the second is A (II), the third is B (III), and the fourth is AB (IV). The letters in the designation indicate the absence or presence of antigens of different groups in the blood.
Step 2
The first blood group is the most common on the planet. Approximately 45% of people are owners of this particular group. In order of priority, the others follow. When transfusing blood, it should be borne in mind that not all groups are compatible, but the first is a “universal donor”, it can be transfused to owners of any other blood groups, since it contains no antigens at all, as indicated by 0 in the labeling.
Step 3
It is widely believed that before, all people had only one blood group. It is believed that the first group is the blood of ancient people who were hunters and gatherers. Researchers believe that its composition has practically not changed over the past time.
Step 4
It is believed that people with the first blood group are characterized by such qualities as determination, assertiveness, responsibility and practicality. It is easy for them to make difficult decisions and adequately assess events. People with this blood type are most often self-confident. They have a strong, stocky build with well-defined muscles.
Step 5
In addition to the division of blood into groups according to antigens and antibodies in its composition, there is an additional division according to the Rh factor. This concept denotes a special protein that may be present on the surface of red blood cells. If it is, then the Rh factor is considered positive, if not, negative. It is believed that 85% of humanity has a positive Rh factor.
Step 6
Thus, if we consider the Rh factor and blood groups in a single relationship, the most common is the first positive group, and the rarest is the fourth negative.
Step 7
Recent studies have shown that a blood type can indicate what diseases its owner is predisposed to. People with the first blood group often have problems with the gastrointestinal tract and blood clotting, often suffer from gastritis, ulcers and inflammatory diseases. Another common problem in people with this blood type is thyroid dysfunction. Children with the first blood group are prone to allergic disorders, purulent-septic infections, babies often have digestive problems.
