Which blood is better positive or negative. What is the best blood type

The table below shows the different nutritional needs of people with different group generalized blood.

Group 1 (0)

Group 0 is the oldest, all other groups developed from it. People of this blood type have a strong immune system, energetic, like the hunters and gatherers who inhabited our planet more than 40,000 years ago. Gathering and hunting provided enough food and meat was a constant source of nutrition.

The people of this group are meat lovers, because animal protein was in abundance and, under the influence of this circumstance, people developed this type of digestive system that coped well with protein.

Strengths:

• Strong digestive system
• Strong immune system

Weak sides:

• Difficulty adapting to changing diet and conditions environment
• Sometimes the immune system is overactive and acts against the body itself (allergies)

Group 2 (A)

Blood type A appeared in agricultural associations and communities. It is typical for a sedentary lifestyle. This type arose 15,000-25,000 years ago in the Middle East and Asia. People learned to cultivate crops and raise livestock. The transition from a hunter to a settled farmer and pastoralist was the reason for the transition to a predominantly plant-based diet, which affected digestive tract and immune system. People of this blood type are considered predominantly vegetarians. This blood type is the most common in Europe.

Strengths:

• Adapts well to changing diet and environment
• Immune and digestive systems are effective if an appropriate diet is followed (vegetarian)

Weak sides:

• Delicate (sensitive) digestive tract
• Weak immune system open to all infections

Group 3 (B)

Wanderings brought people from Africa to Europe, Asia and the American continent. Approximately 10,000-15,000 years ago, this blood type appeared. In humans, gene mutations occurred and group B was able to adapt better than others to a completely different climate. People of this group have a strong immune system, easily extracting energy from food.

Type B people have a particularly high adaptability inherited from their ancestors. In the nutrition of people with group B, dairy and agricultural products play an important role, so they absorb dairy products better than others.

Strengths:

• Strong immune system
• Flexible system of adaptation to changes in diet and environmental conditions
• Balanced nervous system

Weak sides:

• No congenital weaknesses, but if the balance in the diet is disturbed, there may be autoimmune diseases and susceptibility to rare viruses

Group 4 (AB)

The youngest blood type historical point vision - group AB. It exists only 1000-1200 years. This blood type is very rare and occurs in only 5% of the world's population. In this blood group, many features of types A and B are combined. Thus, people of this type can combine in their diet the most different products nutrition.

People with group AB are largely protected from autoimmune diseases such as arthritis and allergies. They have antibodies that protect well against diseases caused by bacteria. But they have a very sensitive digestive tract and are often prone to cancer.

Strengths:

• The youngest blood type
• Flexible, highly sensitive immune system
• Combines the advantages of types A and B

Weak sides:

• sensitive (gentle) digestive tract)
• Too "open" immune system, unstable to microbial infections
• Combines the cons of types A and B

There are many classifications that divide blood into groups. All of them are designed with different antigens and antibodies in mind - small particles that are either attached to the membrane of red blood cells or float freely in the plasma.

The first experiments on blood transfusion most often ended in the death of the patient. The thing is that then people did not have the slightest idea about blood types. To date, the most common classifications are the AB0 system and the Rh factor system.

According to the AB0 system, blood is classified as follows:

• 0 - first;
• A - the second;
• B - the third;
• AB is the fourth.

What determines the rarity of a blood type?

The rarity of blood groups, like many other features of our body, depends on natural selection. The fact is that throughout the two-million-year history of mankind, people had to adapt to new conditions of existence.

The climate changed, new diseases appeared, and our blood developed with them. The oldest and most common group is the first. Scientists believe that it was she who was the original, and all the groups known today went from her.

Rare groups appeared much later, so they are not so common in the population.

Which group is the least common?

The world leader in rarity is 4 negative group blood. Despite popular belief, 4 positive is about 3 times more common. There are more people with it than the owners of blood of the 3rd negative group.

Why is group 4 the least common?

The fact is that its very appearance can be considered a peculiar phenomenon. It combines the properties of two opposite types of blood - A and B.

People with blood group 4 have a strong immune system that easily adapts to environmental conditions. By the standards of biology, this group is the most complex.

This type of blood appeared only a couple of thousand years ago. On the this moment it is the most demanded at any blood transfusion station, since there are still not so many of its carriers.

What is the most common blood type?

The most common blood of the first group (or zero according to the AB0 classification). The second is a little less common.

The third and fourth are considered rare. The total percentage of their carriers in the world does not exceed 13-15.

The most common types (1 and 2) arose at the dawn of mankind. Their carriers are considered the most prone to allergies of various origins, autoimmune processes and other diseases. The blood of this type has changed little over hundreds of thousands of years, therefore it is considered the least adapted to modern conditions.

The percentage of blood types also determines the Rh factor. Positive is much more common than negative. Even 1 negative group, which is the leader among negative blood types, occurs in 7% of people.

The distribution of blood into groups also depends on race. In man Mongoloid race blood will be Rh positive 99% of the time, while Europeans are about 85% Rh positive.

Europeans are the most common carriers of group 1, Africans are 2, among Asians 3 is the most common.

Blood types: percentage prevalence

As statistics show, different kinds blood types vary greatly in prevalence around the world. Type 0 people are easy to find, and type AB blood is unique in its own way.

The following table will help you finally understand which of the groups are the most common, and which are much less common:

Who should donate blood?

The main rule of blood transfusion is that people with positive negative blood can be transfused. If the opposite is done, the person who needs a transfusion will die. This is due biological features antigen-antibody systems.

Although 1 is considered rare, its uniqueness lies in the fact that in emergency cases such people can be transfused with any type of blood, provided that the Rh factors are compatible. At the same time, other types of blood are not so versatile.

Group AB can only be transfused to people with the same blood type.

No matter what kind of blood you have, by donating it for donation, you will help save a person's life. The most expensive and sought after blood is Rh negative. If you are one of the 15% of people who carry it, be sure to consider the possibility of becoming a donor. Periodic blood donation is not only charity, but also a way to improve functional state its hematopoietic system.

Video: The rarest blood type

Human blood groups have been known for a long time. The most common is the first group, the last, the fourth, is considered the most rare. The appearance of one or another blood type can be influenced by the parents of the unborn child and genetic predispositions. Already installed a long time ago dependence of human health on group affiliation, which allows you to determine which group is the best.

Erythrocytes, or red blood cells, carry specific antigens, which define a set of unique qualities of blood and plasma. The most popular group in the world is considered the first (indicated by 0) - about 50% of all inhabitants of the planet. The second group belongs to 40% of the population (denoted A).