Medically reviewed by Amelia MacIntyre, DO One of the most important characteristics of blood is its type. Knowing your blood ...

My blood type is A negative. I’ve heard this can cause pregnancy issues, so I Googled “Rh-negative blood” and ran across a bunch of weirdo sites with “theories” about the origin of ...

People with type O blood enjoy a slightly lower risk of heart disease and blood clotting, but they may be more susceptible to hemorrhaging or bleeding disorders. This may be especially true after ...

One out of every eight marriages in the U.S. is a potentially dangerous mismatch, biochemically speaking. In these 200,000 or more marriages a year, the wife lacks the Rh factor present in most ...

When a mother has the Rh-negative blood type and the father is Rh-positive, there is the potential of immunizing the mother against the blood of her developing baby.

Many studies show no clear evidence that people with Rh-negative blood are at increased risk for chronic medical issues. AB negative is the rarest blood type to have, but that’s not a bad thing.

Investigators determined whether ABO and Rh blood groups were associated with risk for SARS-CoV-2 infection and severe COVID-19 illness.

Rh typing is genetically most complex blood typing system than others. Like other traits, Rh factors are under the control of genes and it follows a common pattern of genetic inheritance.

Induced abortion during the first trimester did not increase risk for Rh sensitization, which suggests that Rh testing and treatment in pregnancy is unnecessary before 12 weeks gestation ...

Patients with type O and Rh- blood groups may have a lower risk of SARS-CoV-2 infection and severe COVID-19 illness, according to a new study.