Type O is particularly high in frequency among the indigenous populations of Central and South America, where it approaches 100%. It also is relatively high among Australian Aborigines and in Western Europe (especially in populations with Celtic ancestors).
Base on this theory, perhaps a few million years ago all people have had type O blood only, which is more resistant against many infectious diseases. The emergence and evolution of blood groups in humans is still not clear.
Since legislation for Indigenous people was a state matter, each state found its own definition for 'Aboriginal'. Examples: Western Australia: a person with more than a quarter of Aboriginal blood. Victoria: any person of Aboriginal descent.
The most common blood type in Australia is O positive and the least common is AB negative. The table below lists each of the blood types, including how common they are across the Australian population. This is the most common blood type. O- can be safely given to any patient, regardless of their blood type.
O-negative blood type is most common in the U.S. among Caucasian adults, at around eight percent of the Caucasian population, while only around one percent of the Asian population has O-negative blood type.
Blood group reference distribution for the German population is given as: 0: 41%; A: 43%; B: 11%; AB: 5%; Rhesus positive: 85%; Rhesus negative: 15%. Analyses were done using the non-parametric Chi2-test (p-value two sided; SPSS 19.0). Results: Median age was 62 (34–82) years. Gender: female 73/44%; male: 93/56%.
Blood type O: the Americas
People with blood type O are said to be "universal donors" because their blood is compatible with all ABO blood types. It is also the most common blood type in populations around the world, including the USA (1) and Western Europe (2, 3).
The most common blood group for people living in the UK (44%) is the O group blood, followed by the A blood group (42%). This means these blood groups are the most commonly requested by hospitals for patients in need. The least common blood groups are B (10%) and AB (4%) blood groups.
Blood group O is the most common blood group. Almost half of the UK population (around 48%) has blood group O.
Type O is particularly high in frequency among the indigenous populations of Central and South America, where it approaches 100%. It also is relatively high among Australian Aborigines and in Western Europe (especially in populations with Celtic ancestors).
Willerslev and his colleagues found that individual Aboriginals from different parts of Australia could be as genetically distinct from one another as Europeans are from East Asians. This points to a long, long period of separation — tens of thousands of years living on opposite sides of massive deserts.
Doing your family history may help you obtain proof of your heritage. You might find a birth, death or marriage record that traces your family to a particular Aboriginal station or reserve. Or you might have oral history stories that can connect you to a particular area or person or photograph.
In molecular history, type A appears to be the 'oldest' blood type, in the sense that the mutations that gave rise to types O and B appear to stem from it. Geneticists call this the wild-type or ancestral allele.
The other blood groups are tens of thousands of years old with B being more recent than A. The oldest group is either group A or one of the forms of group O.
Blood type A is the oldest, and existed even before the human race evolved from our ancestors.
Based on statistics, the rarest blood type is AB negative. According to the American Red Cross, AB negative blood type occurs in "1% of Caucasian, 0.3% of African American, 0.1% of Asian and 0.2% of Latino American" populations.
B positive is an important blood type for treating people with sickle cell disorder and thalassaemia who need regular transfusions. These conditions affect South Asian and Black communities where B positive blood is more common.
The gene for blood group B first appeared in significant numbers somewhere around 10 to 15,000 B.C., the tail end of the Neolithic period, in the area of the Himalayan highlands now part of present day Pakistan and India.
Approximately 45 percent of Caucasians are type O (positive or negative), but 51 percent of African-Americans and 57 percent of Hispanics are type O. Minority and diverse populations, therefore, play a critical role in meeting the constant need for blood.
The main findings of our study are that (1) O type subjects have thicker FCT and less TCFA compared to non-O type subjects and (2) O type subjects have larger minimum lumen area and minimum lumen diameter compared to non-O type subjects.
Of the eight main blood types, people with Type O have the lowest risk for heart attacks and blood clots in the legs and lungs. This may be because people with other blood types have higher levels of certain clotting factors, which are proteins that cause blood to coagulate (solidify).
Blood group reference distribution for the German population is given as: 0: 41%; A: 43%; B: 11%; AB: 5%; Rhesus positive: 85%; Rhesus negative: 15%.
The authors found that individuals with type O blood were relatively protected from viral infection (relative risk (RR) = 0.87; 95% CI, 0.82–0.91). Unlike previous studies, however, there was no difference between ABO blood type and progression of illness to hospitalization or mortality (each, P > . 40).