For a long time, the discussion about blood type never seemed to stop. Speaking of it, many people should have countless topics on their minds: blood type and personality, blood type and constellation, blood type and destiny, ......
Of course, there are many claims that seem very mysterious, such as blood type B is easy to attract mosquitoes, people with blood type A have the most gentle personality, and people with blood type AB have a relatively short lifespan. In recent years, there has also been a saying that "people with type O blood have the best immunity", which makes people with type O blood really raise their eyebrows.
What can blood do to the human body?
Transport of oxygen and nutrients
Blood transports oxygen from the respiratory and digestive systems to various tissues and organs in the body by carrying oxygen and nutrients, which are necessary to maintain cell survival, and nutrients that provide the energy and building materials that cells need.
Carries metabolites
Blood also carries metabolites, such as carbon dioxide and other waste substances, which are carried from cells and tissues back to excretory organs such as the lungs and kidneys for excretion.
Immune function
The blood contains white blood cells (immune cells), which are an important part of the body's immune system, and white blood cells travel through the blood to reach the area of infection or injury, participating in the elimination of pathogens in the body and the repair of wounds.
Coagulation function
Platelets and clotting factors in the blood are key components of blood clotting mechanisms, and when blood vessels are damaged, platelets can aggregate and adhere to the injured area, activating clotting factors and forming blood clots to prevent excessive bleeding.
Blood type may affect the disease, which blood type has good resistance in people?
The saying that "different blood types have different personalities" was once very popular, but it has not been recognized by the academic community. However, there are many studies on the influence of blood type on diseases.
In 2012, the Harvard School of Public Health compiled data from two long-term studies that followed nearly 90,000 adults over 20 years and found that people with blood type O had a relatively lower risk of heart disease. People with blood type AB are 23% more likely to develop heart disease, those with blood type B are 11% more likely to develop heart disease, and those with blood type A are 5% more likely to develop heart disease compared to people with blood type O.
In 2014, a study from Taiwan included nearly 340,000 healthy people with laboratory-based blood types. Compared with blood type O, blood type A was significantly associated with an increased risk of gastric cancer and mortality, and non-O blood type was associated with an increased risk of pancreatic cancer.
In 2018, a study presented at the Chinese Conference on Tumor Markers showed that ABO blood group is an independent prognostic factor for ovarian cancer patients. After analyzing the relationship between blood type and clinical characteristics in ovarian cancer patients, the investigators found that ovarian cancer patients with blood types B and AB had a worse prognosis, and this association was independent.
In addition, a study from the University of Sheffield in the United Kingdom found that people with blood type O had a lower risk of developing Alzheimer's disease.
However, this does not mean that blood type O is 100% healthier, there are many factors that affect the disease, and a healthy lifestyle, reducing stress, and getting enough sleep can reduce the probability of disease.
Tips: Ordinary people should determine their blood type as soon as possible, and pregnant women with rare blood types should inform their doctors in time, contact the rare blood group bank, and store blood for backup, just in case.
Overall, there is no clear evidence that people with a certain blood type have better resistance, and people with each blood type have their own unique immune profiles and susceptibility to related diseases.
The individual's resistance is still related to genetics, environment, lifestyle and other factors, so no matter what blood type, maintain a healthy Xi habits, a balanced diet, moderate exercise, and regular exercise of the immune system in order to maintain good health.
Are people with blood type O really healthier and longer and better than people with other blood types?
In fact, this is very one-sided, although many studies have found the relationship between it and health, but it is not because of this to draw conclusions, let's talk about them one by one:
Let's talk about the problem of blood transfusion first, the reason why blood type O is called universal blood by many people is because it does not have A and B antigens, for people with these two types, if blood transfusion is needed, blood type O can come in handy. But to say that it is omnipotent because of this is a bit exaggerated and easy to misunderstand.
The so-called success is also Xiao He, its advantages, to a certain extent, can also be said to be its disadvantages, for people with this blood type, if you don't pay attention to this aspect, blood transfusion at will, it may have a great impact on health. Because its coagulation function is relatively poor, it is easy to produce a coagulation reaction and cause hemolysis.
Also, if there is bleeding, it is slower to stop bleeding. A Japanese study has found that people with this blood type have a higher mortality rate compared to people with other blood types if they have a major accident.
It also has a disadvantage, which is more obvious in women, and for women who are pregnant, they may encounter relatively more problems. Researchers in the United States have found that women with this blood type have higher levels of one hormone in their bodies than others.
How do I know my blood type?
Hemagglutination test
This is the earliest and most widely used method in clinical practice, including slide method, test tube method and automatic microplate method.
The slide method is a commonly used primary screening method for blood group identification in clinical practice, which is easy to operate and saves materialsThe test tube method is the most basic test method of cross-matching, which improves the sensitivity of the test and is more accurate and reliable than the slide methodThe automatic microplate method uses the ABO blood group automatic detection method to carry out positive and negative stereotyping tests, and the judgment accuracy is high, reaching 99 in one interpretationMore than 8%, and can improve the sensitivity of detection.
Flow cytometry
This method has the characteristics of high sensitivity, fast speed, good specificity, accurate detection results, and good reproducibility.
Can blood type really help a person have cancer?
The answer is clearly not. Although a study from Shanghai Jiao Tong University looked at the association between blood type and cancer, it was only an observational study and could not draw a causal relationship between the two.
Zhang Kai, deputy director of the cancer prevention department at the Cancer Hospital of the Chinese Academy of Medical Sciences, made it clear that there is currently no evidence that there is a link between blood type and cancer.
The congenital nature of blood type is related to heredity, and the relationship between heredity and cancer is certain, and genetic factors account for about 20% of all cancer risks, so it is not possible to judge whether a person will develop cancer based on blood type.