Does blood type determine whether a person suffers from cancer, infertility, gastric ulcer, even cholera and malaria? More and more scientific studies have found that this is indeed the case. Blood type really determines the distance between a disease and a person.
A study by the University of Pennsylvania in the United States involving 20000 people found that most people with the adamts7 gene in their bodies had a higher risk of heart disease. And the risk of heart disease of people with type O blood carrying this gene is not higher than that of ordinary people. Researchers believe that this discovery will help develop new treatments for heart disease. For example, some drugs can be developed that mimic the genes of people with type O blood.
During thousands of years of evolution, human blood types have evolved into four types: A, B, AB and o. Blood types are mainly inherited from their parents’ genes, and the differences between blood types mainly depend on the antigens on the surface of human red blood cells. Each blood group produces antibodies against deadly diseases, but each has its own weaknesses. For example, people with type O blood are the least likely to die of malaria, but they are the most vulnerable to cholera and gastric ulcer caused by bacteria and viruses.
In the 1950s, studies in four London hospitals found that people with type a blood were more likely to suffer from gastric cancer than those with type O blood, but people with type O blood were more likely to suffer from gastric ulcer. These findings have now been confirmed. A 35 year study involving millions of people recently published by Karolinska Institute in Sweden found that people with type a blood are more susceptible to factors that can induce gastric cancer, such as smoking, drinking alcohol and taking nonsteroidal anti-inflammatory drugs. People with type O blood are more likely to be infected with bacteria that cause gastric ulcer and Helicobacter pylori.
American researchers have found that blood type also determines a woman’s fertility. Among female patients receiving infertility treatment, the number and quality of eggs of people with type O blood are twice as low as those of ordinary people. But the number of eggs in type a blood is higher. A study by Harvard University found that women with type AB and B blood have a higher risk of ovarian cancer, and pregnant women with type AB blood have a higher risk of preeclampsia.
Other studies have also shown that people with AB and B blood types have a high risk of pancreatic cancer. People with type O blood have the lowest risk of cancer, but are most likely to be infected with the deadly norovirus, which can cause vomiting and diarrhea.
As for the more popular view of “blood type diet” – that is, the diet suitable for people with different blood types should also be different. For example, in order to lose weight, people with type a blood should eat vegetarian, while people with type O blood should eat meat and stay away from dairy products and flour. Some diet experts do not agree. They believe that doing so will lead to the lack of nutrients such as calcium in the human body.
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