Blood group diets have been popular for nearly two decades now.
These diet supporters suggest that blood will determine which foods are best for your health.
There are many people who believe in this diet, and claim it saved their lives.
But what are the details of the blood-type diet, and is it based on any solid evidence?
Let's find out later
What is a blood group diet?
A natural therapist, Dr. Peter D’Adamo, disseminates diets according to blood type, or diet the group blood, in 1996.
His book is Eat standard according to blood type has been astonishing success. It was the best-selling book of the New York Times, which sold millions of copies and is still popular today.
In this book, he declares that the optimal diet for any individual depends that man's.
He affirmed that each type of blood represents the genetic characteristics of our ancestors, including the diet they developed to thrive.
This is how each blood type is based on blood type:
- Type A: Called farmers, or growers. People in group A should eat a diet rich in plants, and not at all Red meat "Toxic." This mode is similar to the vegetarian diet.
- Type B: Called nomads. These people can eat plants and most meats (except chicken and pork), and also eat one Dairy foods . However, they should avoid wheat, corn , lentils, tomato and some other foods.
- Type AB: Called the mysterious person. Described as a combination of types A and B. Foods eaten include seafood, Tofu , dairy foods, bean and cereals. They should avoid kidney beans , corn, beef and chicken.
- Type O: Called a hunter. This is a high-protein diet mainly based on meat, fish, poultry, some fruits and vegetables, but limited cereals, pea's tree and dairy foods. It closely resembles paleo diet.
Remember that I think any Which model in this diet will also be an improvement for most people, regardless of their blood type.
All four diets (or "diets") are based primarily on healthy food , and a huge step forward from processed snack food in Western standard diets.
So even if you continue one of these diets and improve your health, it doesn't necessarily mean that it is related to your blood type.
It may be that the cause of health is simply that you are eating healthier food than before.
Summary: A-type diet is similar to a vegetarian diet, but type O is a high-protein diet similar to a paleo diet. The other two categories are in the middle of that range.
Lectin is the intended link between diet and blood type
One of the central theories of blood group diets is related to the the protein called lectin.
is a family of diverse proteins that can bind sugars.
These substances are considered anti-nutritional substances and may have a negative effect on the intestinal endothelium .
According to the theory of blood group diets, there are many dietin lectins that specifically target different types of ABO blood.
It is thought that eating the wrong kind of lectin can lead to (grouped together) in red blood cells.
The fact is that there is some evidence that a small fraction of lectins in raw, uncooked legumes can have a specific binding activity with a certain blood group.
For example, live lima beans can interact with red blood cells in people with type A blood .
However, in general it seems that the majority of lectins bind in response all ABO blood types ( 3 ).
In other words, dietary lectins are NOT exclusive to any blood type, except for some types of legumes.
This doesn't even have any practical relevance, because most bean plants are soaked and / or cooked before consumption, destroying harmful lectins .
Summary: Some foods containing lectins can bind red blood cells. Most lectins are not specific to specific blood types.
Is there any scientific evidence about blood-type diets?
Research on ABO blood groups has increased rapidly over the past few years and decades.
There is now strong evidence that certain blood types may be at higher or lower risk .
For example, type O has a lower risk of heart disease, but is at a higher risk of stomach ulcers ( 8).
However, no research has shown that this is related to diet.
In a large observational study of 1,455 young people who were on a type A diet (more fruits and vegetables) were associated with better health signs. But this effect was seen in all people follow the A-type diet, not just people with blood type A .
In a 2013 review study, where researchers examined data from more than a thousand studies, they did not find a well-established study to consider the health effects of diet. according to blood type .
They concluded that: "There is currently no evidence to prove the health benefits of a blood group diet."
Of the 4 studies that are somewhat relevant to the ABO diet, all are poorly established .
One of the studies shows that the relationship between blood groups and food allergies is in conflict with recommendations for blood group diets .
Summary: No research has been established to confirm or reject the benefits of blood type feeding.
I have no doubt that many people get positive results by following this diet. However, this does NOT mean that anything is related to their blood type.
Different diets work in different people. Some people like to eat more plants and less meat (like A-type diets), while others eat a lot of high-protein animal foods (such as an O-type diet).
If you have great results when you eat with a blood group, then you may simply have found a diet that is suitable for your metabolism. It may have nothing to do with your blood type.
In addition, this diet eliminates the majority processed food Unhealthy from human diet.
Perhaps that is the single biggest reason it works without involving different blood groups.
However, if friend already have a blood group diet and it works, then by all means keep doing it and don't let this article disappoint you.
If your current diet is not broken, don't adjust it.
However, from a scientific point of view, the number of evidence supporting the blood-based diet is not particularly impressive.