How accurate is the blood group diet
Blood Type Diet: A Beginner's Guide
Table of Contents
- What is the blood type diet?
- How does the blood type diet work?
- Which foods can be on the menu for all blood groups?
- This is the right way to get started
- Benefits of the blood type diet
- Disadvantages of the blood type diet
- Smart tips for everyday life
- Knowledge to take away
According to the inventor of the blood group diet, different foods should be better tolerated than others due to the evaluation for each blood group. But can you really lose weight thanks to an individual nutrition plan that is tailored to your blood group?
What is the blood type diet?
The blood group diet was developed in the 90s by the naturopathic doctor Dr. Peter D'Adamo launched. The doctor assumes that each blood group is evolutionarily oriented for very specific foods. This means that, according to this theory, an optimal supply of food to the body is determined by the respective blood group type and decides which foods make us fat or slim.
Overall, the form of nutrition is characterized by unprocessed and relatively healthy foods. You can find out which foods are intended for which blood group in the following chapter.
How does the blood type diet work?
According to the doctor, there are various antibodies in our blood that react with certain proteins in food. If the food does not match the blood group, however, according to D'Adamo, the blood "clumps" and a defense reaction is the result.
However, if the “right” foods are consumed, our body should become leaner, more vital and healthier. The doctor also includes the so-called secretor status, which provides information on whether blood group antigens are present in body fluids such as saliva. For the naturopathic doctor, this is another key factor in food selection.
Below we have them for you individual forms of nutrition summarized:
Blood group 0: hunter
This blood group was particularly common among hunters around 40,000 years ago. At that time, meat was the main focus of the diet. For example, people with blood group 0 should eat mainly animal and thus protein-rich foods such as meat, fish, poultry but also fruit and vegetables during the diet. Legumes, grains, and dairy products, on the other hand, should be avoided. It is therefore very reminiscent of the Paleo diet.
Blood group A: farmer
According to the theory, this blood group is said to have occurred specifically in sedentary people who mainly ate plant-based foods. For people with blood group A it is therefore important to have enough fruit and vegetables. Legumes, grains and seafood are also allowed - but generally based on a vegan diet, as cow's milk products should be avoided. Wheat is also not recommended in this context.
Blood group B: nomad
A balanced diet is key here. Blood group B is said to have arisen during the time when people were eating dairy products, vegetables and eggs. Thus, the mentioned foods as well as meat and cereals are on the menu. Poultry, wheat and rye products are apparently not tolerable for the "nomad".
Blood group AB: The puzzling one
It is puzzling because there is no particular food group in the foreground. The blood group is said to have originated when the peoples of A and B mixed. According to the theory, people with blood type AB, which occurs rarely, tolerate all foods well. Thus, this form of nutrition is characterized by mixed food, i.e. meat, vegetables, fruit, cereals and legumes. However, meat should be consumed in smaller quantities.
Other important information about the diet:Five meals a day are eaten. In order to prevent a possible nutrient deficiency, dietary supplements are recommended. The daily number of calories is between 1500 and 1800 kilocalories and should result in weight loss.
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Which foods can be on the menu for all blood groups?
You can consume these foods without hesitation:
In addition to the respective foods that are permitted for each blood group type, the following foods may also be consumed:
- fresh and unprocessed fruits and vegetables
These foods are taboo:
- processed foods such as ready meals
- high-calorie and fatty foods
Wheat is classified as a "fattening grain" in the blood group diet and should therefore be avoided as far as possible for all blood groups. In addition, according to the inventor of the diet, so-called lectins (certain proteins), which are contained in certain legumes such as kidney beans, but also in wheat, are unfavorable. These are apparently supposed to ensure that the red blood cells stick together and trigger various disorders in the body.
This is the right way to get started
Before starting the blood type diet, it is important to consider a few things in advance. Acquiring background knowledge of the diet is first advisable so that weight loss can also be achieved. You should also be informed about the blood group your blood belongs to in order to choose the right diet. You can have this determined by your family doctor by taking a blood sample.
As a further preparation step, an intensive examination of the respective food is recommended. This way you know exactly which foods are suitable and which are not. This makes shopping and preparing meals easier. It also saves you time. For working people, it makes sense to pre-cook the food and warm it up in the office. Eating out turns out to be rather difficult during the blood type diet due to the explicitly selected foods.
In order to avoid constant shopping, it can make perfect sense to plan meals in advance for the whole week and thus only go shopping once a week. This gives you a precise overview and saves time.
Benefits of the blood type diet
Every form of nutrition is based on a diet with fruits and vegetables and little processed products. If you have previously resorted to fatty and high-calorie foods, the blood type diet can be a useful introduction to a change in diet.
In addition, the forms of nutrition can be adapted individually. It is recommended to choose the respective food depending on the blood group. However, since all forms of nutrition are based on a largely healthy diet, you can adapt and swap them as you wish. The integration of exercise into everyday life is very important in addition to the right diet.
Disadvantages of the blood type diet
Unfortunately, there are some points in the blood group diet that do not necessarily speak in favor of implementation. First of all, there is no scientific evidence that the type of diet actually correlates with the respective blood group. Whether the recommended diet actually has positive effects on our body due to the special food, depending on the blood group, is more than controversial.
While scientists have found a link between diet and a reduced risk of heart disease, they have not been able to trace this finding back to a person's blood type. This means that the basic idea of the diet is strongly called into question (1).
There is also a lack of scientific evidence in relation to the lectins (proteins) mentioned, which are supposed to clump with our blood if the diet is “wrong” (not adapted to the blood group). However, these proteins only get into our blood in small amounts and are broken down during digestion. They also lose their effectiveness when heated. This was recently confirmed by the German Nutrition Society (2).
Another disadvantage of the blood type diet is the rather inflexible eating plan. Since the food is very strictly prescribed depending on the blood group, it is rather difficult if you would like to have your meal in canteens or restaurants. Spontaneous dining appointments are therefore a bit difficult, which makes staying power much more difficult.
In addition, nutrient deficiencies can occur due to the sometimes very one-sided diet. Because not every single recommendation represents a healthy and balanced diet. People with blood group 0 and A should avoid dairy products, which is why calcium deficiency is possible. Therefore, dietary supplements are often recommended in this context.
Smart tips for everyday life
During the implementation of the blood group diet, it is helpful to pre-cook the portions and, if necessary, freeze them. This saves you time and unnecessary stress. Frozen fruits and vegetables can also be used.
In addition, it is recommended to only use unprocessed products, so the lists of ingredients do not have to be searched for the lectins mentioned.
Overall, it should be noted that the blood group diet is seen more as a starting point for a change in diet and should not be practiced for a long time due to the nutritional deficiencies. This diet is probably less useful for successful weight loss.
Knowledge to take away
The basic idea of the blood group diet is to use the individual blood groups as the basis for the form of nutrition. According to the conception, each individual blood group developed in the course of the evaluation and is therefore only compatible with certain foods.
Overall, the diets are based on a lot of fruit and vegetables, but are also one-sided, which is why nutrient deficiencies can be the result. There is no scientific evidence between blood type correlation and diet. In addition, weight loss is not always foreseeable. The blood group diet should therefore be seen more as an introduction to a change in diet.
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