Blood groups – Rhesus Factor. Myths And Truths. How Related To Some Diseases And How To Diet?

Statistical studies in the Greek population have shown the same frequency of blood groups in Europe.

AB = 4.75%

A = 37.93%

B = 12.93%

0 = 44.39%

The frequency of blood groups on the Rhesus factor in the Greek population are:

Rhesus positive = 85%

Rhesus Negative = 15%

Those with blood group A are more at risk of developing gastric cancer and much less those who have the


Those with blood type O are more at risk than anyone to develop stomach or duodenal ulcer, Helicobacter have to have arthritis, allergies, melanoma, bladder cancer, thyroid disorders, to develop depression.

Those with blood type O have strong teeth.

Those with blood type O are at less risk of developing breast cancer and lung.

Those with blood group AB or B, are at increased risk of developing pancreatic cancer compared to those with blood group A or O.

Women with blood group A or B are at increased risk of ovarian cancer development.

Men with blood type O, are prone to the accumulation of excess weight.

Humankind with diabetes who have AB and B blood have a much higher risk of developing pancreatic cancer.

Diet based blood group, based on the idea that the different types of blood, food processed differently. To lose weight, people with group A should follow a vegetarian diet, while those of group O should eat meat and avoid dairy and wheat.

Blood groups


The blood is separated into several categories depending on the presence of substances in the membrane surface surrounding the red blood cells. These substances are chemically proteins are called antigens.

Each organization depending on the antigens of erythrocytes of blood tolerate any class, but destroys the “incompatible” cells, ie blood group different from their own, with serious consequences so dangerous to his life.

The antigens of the erythrocytes is too much, however, important clinically are those belonging to two antigenic systems, the ABO system and RHESUS system of which have been named the blood groups in man.

The ABO system is the first discovered in 1900 by LANDSTEINER and indicates whether or not the substances A and B red blood cells.

Substances such antigens, or there are two together, or only one of them or none.

‘When there are two, the group said AB

‘When there is only the first, the group called A

‘Where there is only B, the group B is called

 When there is neither A nor B, the group is said 0

The presence on the erythrocyte antigens A and B alone or together, determines the presence in blood plasma of anti-B substances and anti-A, respectively, and anti-A + B when the group is O, devoid i.e. antigens A and B.

The anti-A substances, plasma anti-B are chemically proteins as antigens and are called “antibodies”.

One of the functions of the ABO system antibodies to agglutinate the erythrocytes in the surface of which there is a corresponding antigenic substance A, B and AB and therefore called sygkollitines while antigens are agglutinogens name.

For example, red blood group B are welded and then destroyed by the presence of anti-B.

It is therefore understandable that a group of individual in the human body eg A plasma will have anti-B and only accept blood group A of another person if will need transfusion.

In conclusion:

Group AB individuals can receive blood groups A, B, and 0, while giving blood only AB group.

‘Group 0 Persons intolerant (due to the simultaneous presence in the plasma of anti-A antibody and anti-B), but only the blood of the same group with them, and can give people of all other groups.


The Rhesus system

After antigenic ABO system, second in importance from a clinical point of view, comes the rhesus system rediscovered by LANDSTEINER 1940.

Depending on the presence or not on the surface of red blood cells of Rhesus factor, that is as the substances

AB, A, B, 0 / Rhesus positive and

AB, A, B, 0 / Rh Negative

An individual rhesus – positive can take blood from the same group, and in some cases blood Rhesus-negative.

Instead, individual Rhesus-negative should not accept blood Rezous- positive.

Note that if the latter happens, during the first transfusion of such blood, usually nothing happens. But after that, the body of the recipient “sensitive” and produces “antibodies” ie. Anti-Rhesus substances will destroy massive red-positive in case of a second or other mis-transfusion risk of life of this patient.

A similar “awareness” situation with the Rhesus factor can occur in women Rhesus – negative if pregnant fetus has inherited from his father Rh antigen.

In this case it is likely that nothing will not occur during the first delivery. The next but deliveries preexisting blood maternal anti-Rh antibodies following the opposite course, will pass through the placenta into the bloodstream of the fetus Rhesus – positive and may cause from mild jaundice, until death or serious damage to the body of the fetus .

O light is called jaundice hemolytic jaundice of newborns and requires special treatment in severe cases involves the “exchange transfusion” that is the full exchange of neonatal blood with new blood compatible.

The blood groups are inherited, therefore accompany the life of every individual from birth to death and is genetically determined.

The study of all systems of erythrocyte antigens of white blood cells and serum proteins (and not just the ABO and Rh systems) serves to control disputed paternity.

If an erroneously group blood should not be given to a patient, it is a massive and sometimes fatal hemolysis of red cells are transfused to the patient.

The patient’s antibodies recognize the corresponding antigens of red blood cells transfused accidentally destroy causing severe anaphylactic reactions, hemolysis with organ failure that can lead each other to death.


Myths and Facts

The donation may harm the body and cause loss of donor power.

Every sane man or woman aged 18-65 years can safely give blood 2-4 times a year. Before every donation, the donor is examined by the doctor of the blood collection step. Made a brief checkup by a questionnaire about medical history, general health and lifestyle of the donor and controlled the level of hemoglobin for finding any anemia and blood pressure and pulse. Also the appearance of the person being examined, the temperature and if need be heard. If judged after all they fit and be bled, a sample of blood be tested for hepatitis B and C (HBV, HCV), AIDS (HIV virus), lymphotropic virus (HTLV) and syphilis. If a donor is found positive for any of these infectious agents, will be referred to specialists for further investigation and treatment. The donation is therefore not only a lifeline for anyone who needs blood, but can be of great benefit and health of the donor with the early detection of any infection or other diseases. Moreover recent studies have shown that systematic donors aged 43-61 years have a lower risk of developing heart disease, hypertension, diabetes, hypercholesterolemia and embolic episodes of non-regular donors.


For replenishment of the tumor and blood components, which allows the donor to each donation takes a long time, even months or years.

Giving 450 ml of blood, ie an amount corresponding to 1/20 of the total volume of donor blood, the body reacts by activating a natural mechanism for sequence to fill quickly. The replacement begins immediately after donation, but for any component different time required for its completion. More quickly (usually within 10 minutes) the volume of blood replaced, thanks to the liquid consumed by the donor (usually a glass of orange juice). The plasma take 24 hours to fully refilled, the platelets 72 hours, the red cells 2-4 weeks and iron 12 weeks to men and 16 women. Therefore it is recommended that an interval of at least three months between donations.

It does not matter to look thrown out, since anyway the donation will check the blood and will not be endangered no patients will transfuse blood.

The donation is a very responsible act. The laboratory tests done on blood donor are not sufficient to assure the safety of transfused blood. For this reason, providing information and guidance to prospective donors before giving blood. The donors should be relaxed, not to have smoked or eaten heavy fatty foods, not to have been drinking alcohol, not to have taken drugs, and carefully read the questions listed in the Donor Sheet about their medical history and lifestyle . Since all blood safety measures taken in our country and internationally, the “safe and healthy” behavior donor considered the most important.