Each person has two Rh factors in their genetics, one from each parent. The only way for someone to have a negative blood type is for both parents to have at least one negative factor. For example, if someones Rh factors are both positive, it is not possible for his or her child to have a negative blood type.

Can you have just Rh negative blood?

Those with Rh negative factor will produce the antibodies. Therefore, someone with Rh+ blood can receive both Rh+ and Rh- transfusions, but those with Rh- can only receive Rh- blood.

Who can donate to Rh negative?

In general, Rh-negative blood is given to Rh-negative patients, and Rh-positive blood or Rh-negative blood may be given to Rh-positive patients. The universal red cell donor has Type O negative blood. The universal plasma donor has Type AB positive or AB negative blood.

Is Rh negative genetic?

Rh Negative Blood Types: Rh factors are genetically determined. A baby may have the blood type and Rh factor of either parent, or a combination of both parents.

Is Rh negative high risk?

Rh disease is preventable. Treatment during pregnancy can protect your baby and future pregnancies. If youre Rh-negative and your baby is Rh-positive, she may be at risk for Rh disease. It can cause serious problems for your baby, including death.

Are there any benefits to being Rh negative?

In areas with a lot of Toxoplasma, being Rh negative might be an advantage. The less severe effects of the parasite may outweigh the effects on pregnancy. Rh negative people may also be resistant to other viruses or parasites that we havent discovered yet.

Why is Rh negative blood so rare?

Each person has two Rh factors in their genetics, one from each parent. Only people with at least one Rh-negative factors will have a negative blood type, which is why the occurrence of Rh-negative blood is less common than Rh-positive blood.

Whats the healthiest blood type?

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.