Relationship between blood group and diet

The Blood Type Diets :: Blood Type and Your Health

relationship between blood group and diet

The blood type diets are fad diets advocated by several authors, the most prominent of whom is "Based on the 'Blood-Type' diet theory, group O is considered the ancestral blood group in humans so their optimal diet should resemble the "2: ABO Polymorphisms and their putative biological relationships with disease". If food containing protein lectins incompatible with one's blood type is consumed, Ideal diet should include a balance between specific proteins and green. Researchers found that the associations they observed between each of the four blood-type (A, B, AB, O) diets and the markers of health are.

The theory behind this diet is that blood type is closely tied to our ability to digest certain types of foods, so that the proper diet will improve digestion, help maintain ideal body weight, increase energy levels, and prevent disease, including cancer and cardiovascular disease. Group A was said to evolve when humans began to farm and had more vegetarian diets.

Group B blood types were said to arise among nomadic tribes who consumed a lot of dairy products. And since Group AB blood was supposed to have evolved from the intermingling of people with types A and B blood, type AB recommendations were intermediate between those for people with types A and B blood.

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Each of these theories has been challenged. For example, there is evidence that type A was actually the first blood group to evolve in humans, not type O. In addition, there is no proven connection between blood type and digestion. So, in addition to a lack of evidence that the diet works, serious questions remain about why it should work in the first place. Eating based on your blood type requires you to know your blood type and then follow a restrictive diet.

relationship between blood group and diet

Personal preferences might be a problem: It was characteristic of the Steppe dwellers of the Eurasian plains. Some of these were nomads, who penetrated far into Eastern Europe; while others, agriculturally based, spread through China and Southeast Asia.

Movement of type B into North America was prevented by the disappearance of the land mass between it and Asia. Earlier populations in North America were all type O.

When eastern Mongolian invaders overran the last of European civilization, type AB came into existence. However, they have some increased susceptibility to certain cancers. Blood Types and Health Our blood type is significant for our health because of three classes of chemicals—antigens, antibodies, and lectins. An antigen is any chemical that generates an antibody by the immune system in response to it.

An antibody is a substance, an "immunoglobulin," made by cells of the immune system specifically to identify foreign material in the body of the host and to adhere to the foreign material.

Antigens and antibodies As far as antigens are concerned, we each have a variety of our own that enable the immune system to decide whether a substance in the body is foreign or not. They are located on the cells of the body. Every form of life from the simplest virus to human beings has a unique set of antigens. In the human body one of the most powerful of these is the one that determines blood type.

When the immune system senses a suspicious invader it looks first to the blood type antigen to decide whether or not it is friendly. Our blood type is named for the blood type antigen found on the red blood cells. When a blood-type antigen senses that a foreign antigen has entered the system, it alerts the immune system to create antibodies to that antigen.

Immune system cells manufacture these antibodies, which attach themselves to the foreign antigen for destruction. Over time we develop an increasing number of different antibodies.

relationship between blood group and diet

When an antibody meets the antigen of a bacteria or virus or parasite it causes the microorganism to become sticky or agglutinate. The organisms clump up and can be disposed of more easily.

Besides detecting and destroying microbes and other invaders, there are other important aspects of blood-type antigens with their resulting antibodies. About a hundred years ago, an Austrian physician and scientist, Dr. Karl Landsteiner, discovered that blood types produced antibodies to other blood types.

ABO Genotype, ‘Blood-Type’ Diet and Cardiometabolic Risk Factors

Thus, blood-type A carries antibodies against type B. Type B carries antibodies against type A. Type AB carries no antibodies against either type A or type B. Type O carries antibodies against both type A and type B. Anti-blood-type antibodies are extremely powerful and can clump agglutinate blood cells of the opposing type in seconds.

Unlike most other antibodies that require some sort of stimulation, for example, vaccination or infection, for their production, blood-type antibodies appear automatically at birth and, by four months of age, have attained almost adult levels. In addition to blood-cell agglutination by anti-blood-type antibodies, it was found that many foods agglutinate the cells of certain blood types but not of others.

A food that may be harmful to the cells of one blood type may be beneficial to the cells of another. Many of the antigens in these foods have A-like or B-like characteristics. This discovery led to the link between blood type and diet. Lectins Which brings us to lectins.

Blood type diet

Lectins are abundant proteins, found in foods. Click to learn more Do you think knowing your blood type is only important in the event of a transfusion? Research indicates that your blood type is a key genetic factor that influences many areas of health and well-being. Throughout your life, you've probably observed that some people tend to lose weight more easily, while for others, their weight is an ongoing battle.

Or wondered why some people are plagued by chronic illness while others stay healthy and vital well into their advanced years. Very simply, the answer is in your blood type. Knowing your blood type is an important tool for understanding how your body reacts to food, your susceptibility to disease, your natural reaction to stress, and so much more.

A single drop of blood contains a biochemical makeup as unique to you as your fingerprint. Below are five facts about your blood type that could change your life: Your blood type may predict your susceptibility for certain diseases. Research has found that individuals of certain blood types may be at a higher risk for certain diseases; studies have found that people with blood type O have a lower risk for heart disease, but a higher risk for developing stomach ulcers.

People who are blood type A have higher risks of microbial infections, but Type A women experience a higher rate of fertility. Other research has found that people with type AB and B blood have a much higher risk of developing pancreatic cancer. People of different blood types react differently to stress. Type A people naturally have higher levels of the stress hormone cortisol in their bodies and produce more in response to stressful situations.

relationship between blood group and diet

On the other hand, people with type O blood, have a 'fight or flight' reaction to stress which results in the overproduction of adrenaline. It takes type O's longer to recover from stress because it is more difficult for them to clear the adrenaline from their bodies.

They are everywhere in your body, particularly in the surfaces that interact with the environment. These include your digestive tract, from your mouth to your large intestine, as well as your nasal passages and lungs. Because these blood type antigens are everywhere, they influence how your body reacts to the food you eat through several factors.

Gut bacteria is related to blood type.

Blood Group O : Proper diet and Nutrition

People of different blood types have different gut bacteria, in fact, certain bacteria are 50, more likely to turn up in people with one blood type or the other. This originated from our ancestors whose digestive tracts developed to accommodate one type of diet over another.