Blood type classification, Walden University, there are many speculations about the relationship between blood type and health:
People with type O blood have the lowest risk of heart disease.
Early studies have shown that type A blood is associated with high levels of low-density lipoprotein ("bad") cholesterol, while type AB blood is associated with inflammation, which are all risk factors for heart disease. In 20 12, researchers from Harvard School of Public Health summarized the data of two long-term studies and followed 89,500 adults in 20 years. The results showed that compared with people with type O blood:
People with AB blood are 23% more likely to suffer from heart disease. The risk of patients with type B blood is increased 1 1%. People with type A blood have an increased risk of 5%. Its correlation has not changed due to multivariate adjustment of other risks or dietary factors. Risk ratio of coronary heart disease with different ABO blood types (95%CI)
Regarding the potential mechanism of increasing risk, the author points out that the plasma level of factor VIII-vWF in non-O-type individuals is about 25% higher than that in O-type patients. The increased level of factor VIII-VWF was previously considered as a risk factor for coronary heart disease.
Therefore, it is particularly important for people with non-O blood to maintain a healthy lifestyle, including raising cholesterol levels, quitting smoking, controlling hypertension and diabetes, exercising, maintaining a healthy weight, limiting drinking and coping with stress.
People with type A blood have a high risk of developing gastric cancer.
There are many factors associated with higher cancer risk, so it is sometimes difficult to know which ones are the dominant factors. However, it has been confirmed that people with different ABO blood types have different cancer risks, people with type A blood have an increased risk of gastric cancer, and people with non-O blood types (A, B, AB) have an increased risk of pancreatic cancer.
A cohort study from Taiwan Province Province included 339,432 healthy people with basic blood types in the laboratory. After adjusting for age, sex, education level, smoking, drinking, physical activity and body mass index, the study showed that compared with type O blood, type A blood was significantly related to the risk and mortality of gastric cancer, while non-type O blood was related to the increased risk of pancreatic cancer. On the contrary, compared with type O, AB blood is negatively correlated with the risk of renal cancer.
Total and specific cause cancer incidence hours classified by ABO blood group, partial screenshots.
The conclusion of the American Journal of Epidemiology also suggests that if the blood type is AB, the risk of gastric cancer is about 26% higher than that of B or O, and if it is A, the risk is 20% higher.
Similarly, although we can't change the blood type, there are still some ways to reduce the risk of cancer, such as paying attention to a healthy diet and eating more fruits, vegetables, whole grains and fish. Exercise regularly and avoid smoking. Avoiding Helicobacter pylori infection is an important measure to prevent gastric cancer. Some experts believe that people with type A blood may overreact to this bacteria, thus increasing the risk of cancer.
People with type O blood have a low risk of developing Alzheimer's disease.
ABO gene is related to the decline of brain function and memory. Compared with people with blood type O, people with blood types A, B and AB are up to 82% more likely to have cognitive and memory problems (which may lead to dementia).
A breakthrough study by researchers at the University of Sheffield revealed the role of blood type in the development of nervous system. In this study, the heads of 189 healthy volunteers were scanned by magnetic resonance imaging, and the volume of gray matter in the brain was calculated. Through data analysis, it is found that people with type O blood have more gray matter in the brain (more gray matter in the posterior cerebellum), while people with type A, B or AB blood have smaller gray matter in the temporal lobe and marginal area of the brain, including the left hippocampus. These findings indicate that the smaller gray matter volume is related to non-O blood.
With the increase of age, the volume of gray matter in the brain usually decreases, which leads to an increase in the risk of diseases such as Alzheimer's disease. The left hippocampus is one of the earliest damaged brain parts in Alzheimer's disease.
The smaller gray matter volume is related to non-O blood.
Therefore, this study suggests that blood type is likely to affect the development of nervous system, and its mechanism needs further discussion in the future. In daily life, we still need to exercise regularly, avoid excessive stress and get enough regular sleep to maintain our cognitive function.
Is blood type related to longevity?
196 1 First discovery 125 There are more people with type A blood in healthy elderly men (65-89 years old). Eight years later, a study of 50 residents over 90 years old found that ABO blood group had no correlation with life expectancy. In a survey of German doctors over 75 years old, blood type O seems to be related to longer life expectancy.
The findings of two studies on centenarians are contradictory. Among 269 centenarians in Japan, a higher proportion (29.4%) observed type B blood. On the contrary, American studies have concluded that type B is not so much related to longevity as a sign of premature death.
In a word, the relationship between blood type and health is becoming more and more clear in the increasingly mature research, but there are many contradictions in the research on the relationship between blood type and actual life span, and it may take some time to solve these mysteries. But what is certain is that no matter what kind of health risks the blood type indicates, we should pay more attention to healthy diet and exercise in our daily life, which will always bring the benefits of reducing the risk of various diseases.