Why is type o blood the most common

Facts About Blood Anyone in good health, at least 17 years old, and at least pounds may donate blood every 56 days, or every two months. Each year more than 4. About one in five people admitted to the hospital will need blood. Up to three: the number of patients that can be treated with one pint of donated blood.

There is no substitute for human blood. Cancer, trauma patients, and those undergoing open-heart surgery require platelet transfusions to survive. Blood makes up about 7 percent of your body's weight.

A newborn baby has about one cup of blood in his body. The actual blood donation usually takes less than 15 minutes. The entire process -- from the time you sign in to the time you leave -- takes about an hour. See below for connections found in other studies as well as the percentage of the U. For more information, click on the links provided. References: medcitynews. O-positive is the most common blood type.

Blood types vary by ethnic group. More Hispanic people, for example, have O blood type, while Asian people are more likely to be type B. For example, the risk of a reaction to transfused blood can sometimes be reduced if a patient receives blood that is from a donor with the same ethnicity.

Some of these blood types are extremely rare. For instance, researchers estimate that just 1 in 6 million people have the RzRz blood type. Blood types are based on the different antigens and proteins present on red blood cells. A blood transfusion is a safe procedure that can help treat several conditions.

Read this article to learn about the different types of blood…. There are a few ways for a person to identify their blood type. Here, learn about these methods, what blood types are, and how they affect….

Proponents claim that a specialized diet has health benefits for people with O blood types. Does research support this diet? Read more here. New diets focusing on blood type have found numerous supporters. Learn about the A positive and negative blood type diet, and its supposed health…. Blood types depend on the content of the blood cells and are inherited from parents. There are eight main types.

Which type you have affects how you…. What are the rarest and most common blood types? Medically reviewed by Alana Biggers, M. Blood type definition Most common Most rare Summary Blood types are a classification of blood based on the antigens present on red blood cells. Blood type definition.

Most common blood type by ethnicity.