What Is the Most Common Blood Type? (2024)

FAQs

What Is the Most Common Blood Type? ›

Type O is routinely in short supply and in high demand by hospitals – both because it is the most common blood type and because type O negative blood is the universal blood type needed for emergency transfusions and for immune deficient infants.

O type is the most common despite being a recessive gene because it is more highly expressed in the gene pool, while type A and type B are dominant (and type AB is codominant) but are less common because they are less expressed in the gene pool.

One of the world's rarest blood types is Rh-null. Fewer than 50 people in the world have this blood type. It's so rare that it's sometimes called “golden blood.”

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).

Why? O negative blood can be used in transfusions for any blood type. Type O is routinely in short supply and in high demand by hospitals – both because it is the most common blood type and because type O negative blood is the universal blood type needed for emergency transfusions and for immune deficient infants.

Theoretically yes, but it would be extremely rare. Two O parents will get an O child nearly all of the time. But as with anything in biology, there are occasional exceptions to this rule.

Rh incompatibility occurs when the mother's blood type is Rh negative and her fetus' blood type is Rh positive. Antibodies from an Rh negative mother may enter the blood stream of her unborn Rh positive infant, damaging the red blood cells (RBCs).

“Type O blood seems to be a mosquitoes' preferred blood type as compared to A, B and AB, but the only significant difference was when it was compared to Type A,” says Ulysses Wu, MD, Hartford HealthCare's chief epidemiologist and medical director of infectious disease.

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.

Blood type B was observed more frequently in centenarians than in controls (χ²=8.41, P=0.04). This tendency also was true in comparison between centenarians and 118 elderly old individuals of the 7153.

What blood type avoids COVID? ›

Some studies show that Type A blood may increase the risk of getting COVID infection, but Type O may protect against infection. There's no blood type that makes you immune to COVID illness. Blood type doesn't change how effective COVID vaccines are.

Results shows that there is no difference in the IQ level in various ABO and Rh blood groups using Stanford Binet intelligence scale for IQ scoring. We found highest IQ Scores in blood group A negative (25.80±8.25) with no statistical significance (p=0.162). (Table 2) (Fig.

Over 80% of the population has a positive blood type and can receive O positive blood. That's another reason it's in such high demand. O positive donors who are CMV negative are known as Heroes for Babies at the Red Cross because it is the safest blood for transfusions for immune deficient newborns.

Results shows that there is no difference in the IQ level in various ABO and Rh blood groups using Stanford Binet intelligence scale for IQ scoring. We found highest IQ Scores in blood group A negative (25.80±8.25) with no statistical significance (p=0.162). (Table 2) (Fig.

Most common blood type by ethnicity

African American: 47% O-positive, 24% A-positive, and 18% B-positive. Latin American: 53% O-positive, 29% A-positive, and 9% B-positive. Asian: 39% O-positive, 27% A-positive, and 25% B-positive. Caucasian: 37% O-positive, 33% A-positive, and 9% B-positive.

O+ is the most common blood type. Only 9% of the population have O- blood, which places it among the rarest blood types. Together, 48% of Americans have type O blood. All blood types can receive type O- blood.