Although the blood type O+ can donate blood to all positive blood types (A+, B+, AB+, and O+), it is not a universal donor. Blood type O- is the universal blood donor, meaning that people with this blood type can donate blood to all other types with a lower risk of causing serious reactions.
Group O can donate red blood cells to anybody. It's the universal donor.
Only 7% of the population have O negative blood. Due to the its versatility for transfusions, it is in high demand. In an emergency, it is the blood product of choice. For example, just one car accident victim can require up to 100 units of O neg.
Why is O + a universal donor? Although O+ is considered to be a universal donor, O- is the actual universal donor because A, B, and Rh antigens are absent in the latter. So, it can be given to anyone, irrespective of the blood group.
Of the eight main blood types, people with type O have the lowest risk for heart disease. People with types AB and B are at the greatest risk, which could be a result of higher rates of inflammation for these blood types. A heart-healthy lifestyle is particularly important for people with types AB and B blood.
In the U.S., the blood type AB, Rh negative is considered the rarest, while O positive is most common.
People with type O blood have the lowest risk of heart disease while people with B and AB have the highest. People with A and AB blood have the highest rates of stomach cancer. People with type A blood can have a harder time than others managing stress because they often produce more of the stress hormone cortisol.
What are the rarest blood types?
Many people don't know their blood type. Here's how to find out yours
Jul 18, 2020
No, siblings don't necessarily have the same blood type. It depends on the genotype of both the parents for the gene determining the blood type. E.g. Parents with the genotype AO and BO can have offspring with blood type A, B, AB or O.
8 blood groups
There are 4 main blood groups (types of blood) – A, B, AB and O. Your blood group is determined by the genes you inherit from your parents. Each group can be either RhD positive or RhD negative, which means in total there are 8 blood groups.
May 23, 2019
Yes this is definitely possible. In this case, the most likely explanation is that dad is a carrier for being Rh- and mom is a carrier for blood type O. What happened was that dad and mom each passed both an O and an Rh negative to the baby. The end result is an O negative child.
When a mother-to-be and father-to-be are not both positive or negative for Rh factor, it's called Rh incompatibility. For example: If a woman who is Rh negative and a man who is Rh positive conceive a baby, the fetus may have Rh-positive blood, inherited from the father.
This is mediated by the antigen-antibodies reaction. Transfer of maternal antibodies across the placenta occurs. This happens when Rh +ve man marries Rh-ve lady. So Rh +ve man should try to avoid marrying Rh-ve lady.
Most people are Rh-positive. People without the protein are Rh-negative. You inherit your blood type from your mother and father. If a Rh-positive baby's blood passes to its Rh-negative mother during pregnancy (or delivery), the mother's body will attack the baby's red blood cells.
A baby may have the blood type and Rh factor of either parent, or a combination of both parents. The Rh positive gene is dominant (stronger) and even when paired with an Rh negative gene, the positive gene takes over.
Before I delve into the science, let me quickly stop any tongues that might be wagging if you are asking about a paternity debate: Yes, two O-positive parents could have any number of O-negative children. In fact, according to the experts, most children who are O-negative have parents who are O-positive.
May 27, 2020