Every drop of blood contains red blood cells, which carry oxygen throughout your body. It also contains white blood cells, which help fight infection, and platelets, which help your blood clot.But that’s not where it ends. Your blood also contains antigens, which are proteins and sugars that sit on red blood cells and give blood its type. While there are at least 33 systems, only two are widely used. These are the ABO and the Rh-positive/Rh-negative blood group systems. Together, these two groups form the eight basic blood types that most people are familiar with:. A-positive.

They exist to let the body know that this particular type of blood belongs to it. (“This cell is mine! See, it has my name on it!”) Those with type A blood, have a special “A” antigen attached to their blood cells. Those with type B blood have a “B” antigen. Those with type AB blood happen to have both “A” and “B” antigens. Blood typing is done so you can safely donate your blood or receive a blood transfusion. It is also done to see if you have a substance called Rh factor on the surface of your red blood cells. Your blood type is based on whether or not certain proteins are on your red blood cells. These proteins are called antigens.

A-negative. B-positive. B-negative. AB-positive. AB-negative. O-positive. O-negativeKeep reading to learn more about blood types and why it’s hard to say which type is the rarest in the world.

Blood types are determined by genetics. You inherit genes from your parents — one from your mother and one from your father — to create a pair.

ABO systemWhen it comes to blood type, you might inherit an A antigen from one parent and a B antigen from the other, resulting in the AB blood type. You could also get B antigens from both parents, giving you a BB, or a B, blood type.Type O, on the other hand, doesn’t contain any antigens and has no effect on A and B blood types. This means that if you inherit an O from your mother and an A from your father, for example, your blood type would be A.

It’s also possible that two people with type A or type B blood could have a baby with type O blood if they carry the O antigen. For example, parents with AO blood could each pass the O antigen on to their child, creating OO (or simply O) blood. There are six of these combinations (AA, AB, BB, AO, BO, OO), which are called genotypes. The four blood types (A, B, AB, and O) stem from these genotypes. Rh factorBlood is also typed according to something called the Rh factor. This is another antigen found on red blood cells.

If the cells have the antigen, they’re considered Rh-positive. If they don’t have it, they’re considered Rh-negative. Depending on whether the Rh antigen is present, each blood type is assigned a positive or negative symbol. It’s hard to say which blood type is the rarest in the world, since they’re linked to genetics. That means the prevalence of certain blood types varies widely in different parts of the world.However, in the United States, AB-negative is considered to be the rarest blood type, and O-positive the most common.

The ranks blood types in the United States from rarest to most common as follows:. AB-negative (.6 percent). B-negative (1.5 percent). AB-positive (3.4 percent). A-negative (6.3 percent).

O-negative (6.6 percent). B-positive (8.5 percent). A-positive (35.7 percent). O-positive (37.4 percent)Again, this ranking isn’t universal.

In India, for example, the most common blood type is B-positive, while in Denmark it’s A-positive. These variations also exist within groups of Americans. According to the, for instance, Asian Americans are much more likely to have a B-positive blood type than Latin Americans and Caucasians. Your naturally contains protective substances called antibodies. These help to fight off any material that your immune system doesn’t recognize.

Usually, they attack viruses and bacteria.However, antibodies can also attack antigens that aren’t present in your natural blood type. Real car parking 2017 street. For example, if you have type B blood that’s mixed with type A blood during a, your antibodies will work to destroy the A antigens. This can have life-threatening, which is why medical centers around the world have strict procedures in place to keep this from happening.Keep in mind that blood types don’t always need to be an exact match to be compatible.

For example, AB blood has both the A and B antigen, so a person with this type of blood can receive either type A or type B blood. Everyone can receive type O blood because it doesn’t contain any antigens. This is why people with type O blood are considered “universal donors.” However, people with type O blood can only receive type O blood.When it comes to the Rh factor, people with Rh-positive blood can receive either Rh-positive or Rh-negative blood, while people with Rh-negative blood can only receive Rh-negative blood. In some cases, a woman with Rh-negative blood can carry a child with Rh-positive blood, resulting in a dangerous condition called.

A Negative Blood Type (A-) 1. Rare Blood TypeIt is very important to maintain sufficient supply of this blood type for it is rare. The A negative blood type is only present in about 1 out of 16 individuals. This means a few number with approximately 6.6% of the population has A negative blood. On the other hand, not all of the ethnic groups share the same proportions of A negative blood types. This blood type is present in about 7% in Caucasians, 2% in African American, 2% in Hispanic, and 0.5% in Asian.

Inheritance PatternsThe ABO gene found on chromosome 9 determines the ABO blood group system. A and B genes are codominant in relationship, making the expression of both antigens A and B when either alleles A or B is present. It is recommended for blood type A individuals to follow a plant-based and low-fat diet. This can be helpful the prevention of potential diseases associated with blood type A individuals. A vegetarian diet works great to keep oneself active, fit and healthy. This will involve lots of fresh fruits, legumes, fresh green vegetables, beans, whole grains, and tofu.

Vegetable oils, soy products and pineapples can be helpful for weight management. Furthermore, high-carb dairy products, meat and wheat products should be avoided. Junk, greasy and processed foods should also be avoided to promote a stress free intake regimen. Exercise RecommendationsThere can be heightened cortisol levels in blood type A individuals. This increase makes it hard for them to handle stress. However, cortisol levels has been known to be reduced with the practice of regular exercise programs that helps promote calmness and focus.

However, overtraining should be avoided because it can increase cortisol levels.Having your blood type taken may cost up to $200 in an office. Some individuals seek instead the, which is worth less than $20.

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