Blood groups and diet – part 1

The four blood groups as we know them today are the result of 40,000 years of evolution of the human species.

 

The four blood groups as we know them today are the result of 40,000 years of evolution of the human species.

The man, who was originally exclusively a hunter (group O), evolved, first (about 20,000 years ago) learning to cultivate the land and feed on its fruits (group A) and subsequently (about 15,000 – 10,000 years ago) , on the heights of the Himalayas, becoming a nomad and taking care of livestock (group B). Finally, about 1,000 years ago, the AB group was formed, the only one not to be the effect of an evolutionary process, but of the mixture between the sedentary inhabitants of the Caucasian areas and the nomads from Mongolia.

What is a blood group?

When the human body is attacked by a pathogen (viruses, bacteria, etc.), it triggers a defense mechanism that attacks and neutralizes these antigens thanks to the presence of plasma proteins called antibodies.

On the surface of the red blood cells two different antigens can be distinguished: the antigen A and the antigen B. In the same way in the plasma anti-A antibodies and anti-B antibodies can exist. Both neutralize and kill red blood cells carrying the corresponding antigen.

Each blood group is therefore characterized by the presence of specific antigens and the corresponding antibodies:

  1. group A contains A antigens and anti-B antibodies
  2. group B contains B antigens and anti-A antibodies
  3. the AB group contains antigens A, antigens B and none of the corresponding plasma antibodies
  4. group 0 is antigen free but contains both anti-A and anti-B antibodies

It’s clear that:

  1. each individual does not have antibodies to the antigens present in his blood, otherwise he would self-destruct;
  2. each individual has antibodies to fight the antigens he does not have.

There are, therefore, 4 possible combinations:

  1. in the red blood cells antigen A is present in the plasma, then the anti-B antibody. the individuals in question constitute the GROUP A.
  2. in the blood cells is present the antigen B, in the plasma we therefore find the anti-A antibody. blood type is B.
  3. in the red blood cells are present both the antigen A and that B. In the plasma none of the two antibodies will be present. The
    blood is from the AB group.
  4. In the blood cells there is no antigen in the plasma so both the anti-A antibody and the anti-B antibody are present. the individuals in
    question belong to the GROUP 0 (zero).

Consequently:

The subject carrying the AB blood group is the most fortunate given that, being free of specific antibodies, it can receive blood from both type A, B, AB and 0 (universal receiver).
contrary speech for those with type 0 blood that can only receive similar blood (universal donor).
The individual of group A can instead receive blood from groups A and 0; while type B blood is compatible only with groups B and groups 0

If these combinations are not respected the antibodies present in the plasma (agglutinins) attack the red blood cells of the transfused blood, neutralizing them (agglutination reaction) and forming small lumps that occlude the blood vessels causing very serious damage to the body.

The blood group to which we belong is inherited from our parents and is immutable from birth to death. The frequency of these groups varies according to the ethnicity of the population: in England about 40% of individuals are in group A and only 10% are in group B; in India group A is present in 27% of cases and group B in 50%. Blood group AB is the rarest in Europe.

Subsequent research into Landsteiner’s studies revealed the existence of other antigens that are important to take into account in the practice of transfusions. Among these, the most important is the so-called Rh factor, an antigen discovered by a group of researchers led by the same Landsteiner, around 1940.
The discovery of the Rh factor was made possible by studies conducted on a group of Rhesus macaques, from which the name Rh was derived.

In the circulatory stream, regardless of the blood group, the Rh antigen may be present or be completely absent. In the first case we speak of Rh positive (Rh +), in the second case of Rh negative (Rh-) blood.

This is it for part one of this mini series, Next week we will continue our in depth analysis by investigating the affinities between blood groups and nutrition. See you all soon.

9 thoughts on “Blood groups and diet – part 1

  1. Avatar
    Operepien says:

    About 85% of humans possess the monkey-like gene RH, while in the remaining 15% the factor RH (RH-) is not found and this could be explained by the presence of an alien gene.

  2. Avatar
    Gemini69 says:

    There is no plausible scientific explanation about the origin of the negative RH group. Orthodox science has confined itself to hypothesizing that it is an unidentifiable, random genetic mutation.

  3. Avatar
    BabYlon67 says:

    Many ancient texts, including the Bible, seem to support this theory. Many stories in ancient texts, particularly those contained in pre-Christian texts, tell of a lineage from heaven that would have created man in his own image. Primitive man identified them as gods of extraordinary longevity, and capable of performing wonders, such as flying over strange vehicles and causing deafening roars by firing fire from such means. Humans witnessed the building of mammoth monuments and splendid cities by these seemingly divine creatures. Because from the point of view of a primitive humanoid they could only appear as gods.

  4. Avatar
    AlteaArtemis says:

    But in reality who were these deities? The myths tell us a lot about them. By what was supposed to be advanced technology they were able to fly in space. They were masters of aviation, metallurgy, astronomy, medicine and – obviously – genetics.

  5. Avatar
    Marcus Bošnjak says:

    It is astonishing how this topic has stirred totally from the original article written by Franco. Nevertheless, I am enjoing all your comments and have to say that this “conspiracy” about the aliens invaders who created our human spaces has been a revelation to me. Have I been a “blind bible follower” to long? After reading some of the amazing comments here and doing a deep search over the internet I hav gathered so much knowledge on this topic that I must say it makes more sense than what we have always been forced to believe via the books and the school teachings. I have to tank you all to open my eyes, at the age of 76 I am understanding more than ever before. Keep on with the conversation, please, do not give it up.

  6. Avatar
    cospaceX9 says:

    It is funny that we can believe that a man separated the oceans and walked through it or that transformed water into wine and who knows what more but then when facing questions such as the ones of who we really are and why only us are of the ‘intelligent type”, then we do not believe in being mixed or genetically modified by an alien race because is too much of a conspiracy so we go back to believe that it was all made by a man called god.

  7. Avatar
    Majer Zoltán says:

    This is a message to all of the naaasayers. Our ancient texts tell us that one day these creatures began to mate with humans. The Bible says that the gods looked at women and found them pleasing to the eye, and then took them into wives, and conceived children, many children.

  8. Avatar
    Fergus Reid says:

    Here is what I think:
    Three prototypes could have been created, each more advanced than the previous one. The first two would have served only as an experimental procedure to arrive at a definitive type. It is suspected that Neanderthals were one of the first results of these experiments, while the possibility that Cro-Magnon was produced by such experiments would be much higher. The last type would correspond to what we now call proto-humanity, and modern man would have descended from it, that is, the final result of the intersections between the ‘gods’ and the proto-humanity.

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