The relationship between blood type and disease

In addition to affecting memory or concentration, blood groups are also linked to levels of stress or the risk of heart disease in humans.

>>>Understand blood type and blood transfusion principles

1. Memory problems

The brain and vascular system in the human body have more in common than common human thoughts. A recent study found that people with AB blood may have problems with memory, language and concentration recovery, with an 82% higher rate than people with other blood types.

Experts suspect that the protein involved in blood clotting, or blood clotting factor VIII, is a cause. This factor can actually reduce the quality of blood flow to the brain.

"Because the level of this factor is closely related to blood type, this could be a link between blood type and cognitive impairment in humans," said study author Mary Cushman.

Studies show that blood type is related to human memory problems.(Artwork: iStock)

2. Pancreatic cancer

According to Yale University experts, it may be more accurate to say that people with O blood groups are at lower risk of pancreatic cancer.

In a study conducted in July, scientists from the school's cancer research center, learned about the bacterium Helicobacter pylori, or H. pylori, often live in the gut in humans.

They found that people with H. pylori are more likely to have pancreatic cancer, due to the A and B antigens that help the bacteria thrive. Meanwhile, people with type O blood don't have antigens on the surface of red blood cells. This is also a mechanism for people with this blood group to donate blood to anyone.

3. Heart disease

A 2012 study by Harvard University found that people who did not carry blood type O had a higher risk of cardiovascular disease, and the highest risk was recorded in people with AB blood type.

Researcher Lu Qui said that the special properties of antigens are factors that affect the heart disease equivalent to the effects of cholesterol and blood pressure. People cannot change blood types, but thanks to this research, doctors can better understand the risk of developing heart disease in patients.

4. Stress

Each type of blood is related to different levels of hormones, so the doctor will adjust the exercises differently according to each patient. For example, people with type A blood often have higher levels of cortisol, a stressful hormone. Stress relief exercises like yoga can be more useful now than jogging or weight training.

When the adrenal glands secrete more cortisol into the bloodstream, the stress response in humans will become more serious. People with type A blood may find themselves more anxious, the time to stabilize again is also more difficult.

Stressful hormones in people with type A blood may be higher than normal.(Artwork: Shutter Stock)

5. Intestinal bacteria

In addition to being present on the surface of red blood cells, wall antigens are also found in the lining of the gastrointestinal tract. The majority of bacteria in the intestinal tract of people who use this antigen as food. One study estimated that the number of beneficial bacteria in people with blood type B was about 50,000 times higher than those with blood type A or O.

More and more research has shown that changes in the intestinal microbiota of the gastrointestinal tract may be related to metabolic diseases, including type 2 diabetes and obesity. Blood type and excretory status play an important role in regulating the general characteristics of the gastrointestinal tract.