The blood type of a healthy person remains unchanged throughout his life, as well as fingerprints. Blood type is a unique identifier of a person, which is transmitted from parents to children. This is an integral feature of each person, which can not always favorably affect our health, and even behavior. The question of the blood group very often arises precisely when a person urgently needs a transfusion. Just at that moment, it’s important to know how rare your blood is.
Scientists around the world have come to the conclusion that one of the oldest blood groups is the first. In the process of evolution, changes in lifestyle, nutrition and the state of the environment, people gradually developed blood groups that we all know so well about.
How to find out a child’s blood type?
To determine the blood type of a child, you can use the table of the ratio of blood groups of mother and father. To do this, find the father’s blood group in the top row, and the mother’s left in the column. At the intersection of these cells, you can see the possible options. But only laboratory analysis can give an accurate result.
Characteristic
The rarity of a blood group is determined by the number of carriers of this type of blood in the world or in a particular country. You need to know that the blood group is determined by the antigens that are in red blood cells AB, and in the plasma - agglutinins ab.
All rare blood groups (fourth negative, third negative, second negative and then first negative) are different in biochemical parameters, and each has its own individual characteristics.
Features
A person with a fourth (the rarest group) absolutely any blood will do, but in this case, the Rhesus factor must be taken into account. When 4 (-), you need to take any blood also with a negative Rhesus, and when 4 (+), then with a positive one.
People with this rare blood type have very strong emotional outbursts and increased creative activity. These are easily wounded, requiring attention, people with a good sense of humor.
The peculiarity of the third negative blood group is that it can only be obtained from a donor with the first or third group. These are calm and balanced people with a great appetite, digestion and metabolism. This category of people does not have problems with being overweight, so they can eat any food without restriction.
The second negative and the first negative are rare blood groups, but they are much more common than the third and fourth. The owners of these shelter groups often have diseases of blood vessels, the heart, as well as the stomach and pancreas. Vegetarian diets and exercise for these people are recommended without fail.
Statistics
Statistics on the rarity of blood groups suggests that the rarest blood on Earth is the so-called Bombay phenomenon. Agglutinogens are not synthesized in this type of blood, and only this type of blood can be transfused. Scientists discovered this phenomenon in India during the epidemic of malaria, but there are very few people with this type of blood and this phenomenon has not become widespread.
Percentage ratio
Blood groups by rarity in percent can be distributed as follows:
- The smallest percentage (0.1%) has the Bombay phenomenon, this group has spread only in India.
- The fourth negative group is 0.4%, most of which are Europeans.
- The next third negative blood group is only 1.5%, most of the inhabitants of Africa, Central Asia and Australia most often have this type.
- The second (-) occurs in 3.5% of people.
- The first (-) - in 4.3%. These blood types are found in people in many regions in different proportions.
Rarity and Rhesus
Blood groups by rarity and rhesus differ among themselves and have different indicators. Even if the blood groups are the same, and the Rh factor is different, mixing these types of blood is not recommended. Otherwise, it can be fatal.
Surprisingly, it is still unknown why all rare blood types carry negative Rh.
Rating of rare blood groups
In the ranking of rarity of blood groups, the first place is, of course, 4 (-). This is an undeniable leader.
In second place is the 3 (-) group, which is slightly inferior to the fourth, but also very rare.
The third place is occupied by 2 (-) and the fourth, last place, 1 (-) is assigned.
Russian rating
Rare blood groups in Russia in some way differ from the general rating. In Russia, the most common rare blood group is the second negative, then the first and third blood groups. As in other countries of the world, the fourth negative is extremely rare, so the Russian rating of rare blood groups is not quite similar to the world one.
Nowadays, science has gone far ahead, doctors and scientists are already able to combine completely different types of blood, both with negative and positive Rh factors. In the world, there has long been a practice of donating and storing one’s own blood, especially if a person has a rare species, so you should not rely on scientific achievements and should stock up on your blood just in case, no matter how ridiculous it may sound.
There are blood banks in almost every country and Russia is no exception, just donate blood, put it in storage and try to make it so that it is not needed.
Many people believe that carriers of rare blood groups have some extraordinary or even supernatural powers. Unfortunately, this is not so, among them there are no "Batmen" and "Superman", they are all quite ordinary people.
The rarest blood type
Thus, it turns out that the fourth negative blood group is the fourth negative. Only 0.4% of the world's population possesses it. This means that out of 200 thousand people, only 1 has a fourth blood group. If we talk about the fourth positive, then it is more frequent than negative. It is owned by about 5% of the world's population. In some individual countries, this figure may increase, for example, in countries such as Turkey, Israel, China, Finland, the percentage is 7. In addition to the fourth blood type, there are rare third, second and first negative ones.
Bombay phenomenon
This phenomenon was discovered in the last century in 1952. One of the residents of Mumbai had a very rare blood group, in which antibodies A and B were absent, but antigen H was present. This phenomenon occurs in 0.0001% of people in the world, and in India - 0.01%.
Since there are a lot of rare blood groups in the world, they do not directly harm the health of the wearer. But at the same time, difficulties may arise if blood transfusion is necessary. It will be very difficult to find the same person who has a rare blood group, so in such cases, the best option is to periodically give blood for yourself, which will be stored in a blood bank.