Even though human blood is made of the same basic elements, there are certain distinctions that account for 4 different blood types that are further distinguished by negative and positive. The four types of blood are conditioned by their antigens-the immune defense systems-on the surface of the red blood cells.
The 4 Blood Types
In the 30s, Tokeji Furukawa, a Japanese professor, published a paper in which he claimed that the 4 blood types reflected the personalities of the people who have them. From then on, blood type categorization has become rooted in Japanese culture and similar to astrological horoscopes, Japanese television and newspapers offer blood type horoscopes as well as a variety of bestseller books that focus on the link between blood type and personality. However, same as with astrology, there is no scientific connection made between personality and blood type.
Hence, a lot of research has been done on how blood types reveal personal health patterns. Some believe that different blood types may protect us from different diseases and scientists have been finding connections between blood types and disease since the middle of the 20th century.
What Does Your Blood Type Reveal about You
Blood type A
Those who have blood type A can donate red blood cells to types A and AB. People with this blood type are more likely to have higher levels of cortisol, according to the National Institutes of Health. Blood type A is associated with 20% higher risk of stomach cancer when compared to types O and B and a 5% increased risk for heart diseases in comparison to those with type O. Those with blood type A are at a higher risk of several types of cancer like leukemia and pancreatic cancer and they’re also more prone to malaria and smallpox. All in all, these individuals are considered to be creative, sensible, reserved, responsible, patient, and earnest. Sometimes however, they can be tense and stubborn.
Blood type B
These people can donate red blood cells to those with type A and AB. They have an 11% higher chance of heart disease than those with blood type O. Women with B or AB blood type, according to a Harvard study, have higher risk of ovarian cancer. The good news about people with blood type B is that they have 50000 times more friendly bacteria than people with A or O blood type.
These people are creative, strong, and active. However, at times, they can be selfish, unforgiving, irresponsible, and erratic.
Blood type AB
These people are universal blood donors. Unfortunately, they have a 23% increased risk of cardiovascular diseases than those with type O. Pregnant women with AB blood type are at a higher risk of a blood pressure condition known as pre-eclampsia. Additionally, a study published in the journal Neurology showed that blood type AB increases the risk of cognitive problems with areas like language, attention, and memory recall than other blood types. These people tend to be cool, adaptable, rational, and controlled. At times, they can be indecisive, critical, irresponsible, and forgetful.
Blood type O
This is the most common blood type and a universal one. They have a higher risk of ulcers, cholera, and rupturing of Achilles tendons. On the other hand, they have less chance of pancreatic cancer and dying from malaria than those with other blood types. These individuals are self-determined, strong-willed, intuitive, and confident. Often, they can be self-centered, workaholic, cold, and unpredictable.