3 basic principles of the blood type diet

Blood can tell a lot about a person, because it is essentially the carrier of life and destiny. Did you know there's even a blood type diet that was very trendy back in the day? Some fat people are still interested in it and study the list of allowed products.

It should be said right away that this technique has been criticized more than once by doctors and has no scientific basis. But what is forewarned is forewarned, so let's try to understand everything about this diet.

Diet history

People once believed that everyone had the same blood. Do you remember the tale of Mowgli? "You and I are of the same blood - you and I! " But soon, after they try to share their blood with the sick and wounded, a theory emerges that the blood is actually different.

Many scientific studies and experiments were conducted with animals and humans, but it was not until 1900 that three blood groups were discovered by Karl Landsteiner, and a little later the fourth was discovered by his students.

Currently, the world has adopted an alphanumeric classification:

• O or I – first;
• A (II) – second;
• B (III) – third;
• AB (IV) – fourth.

The most common blood types in the world are the first and second blood types. Its carriers are 80% of all humanity. The third is less common, 15% have it, and the fourth is considered the rarest and is represented by only 5%.

The American naturopathic doctor Peter D'Adamo suggested at the end of the twentieth century that if certain human diseases are directly related to genetic characteristics and often depend on blood type, then blood type nutrition is probably possible. He questions each of his patients about preferences for certain foods and puts together the right diet for each group. All products were divided into beneficial, undesirable and neutral.

D'Adamo has written several books on diet. They were extremely successful among American readers and became bestsellers. Then his concept of "4 blood types - 4 paths to health" spread all over the world and everyone who wanted to lose weight rushed to try the new diet.

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Basic principles and rules

Nutrition according to blood groups boils down to the following.

• In each period of human evolution there was a certain diet, when it changed, the blood mutated and a new group appeared. And therefore for each group there is a basic set of products.
• To keep your body in top shape, you need to eat the way your blood type ancestors did. Thanks to the biochemical connection between blood and food, the "right" foods are better digested, digested faster, increase metabolism and strengthen the immune system.
• If you exclude the "wrong" foods from your diet, you can improve the functioning of the body, improve health and extend life.

An example of this is moving to another habitat or even tourism, when the local unusual cuisine is not accepted by the body and health problems begin.

If a resident of the Far North, who has eaten fatty protein foods all his life, decides to move to Europe with its high carbohydrate cuisine, then there is a high risk of diabetes and digestive problems.

You don't even have to go far for examples, look around. Some people hate milk, others prefer plant-based foods, and others will simply starve if they don't eat a large piece of meat. Perhaps this is not without reason?

Total food mass for all groups

Let's get acquainted with the study of Dr. D'Adamo, who divides foods according to blood type, highlighting prohibited, permitted and neutral.

Legend:

• products to be restricted are marked with a "-" sign;
• allowed – "+";
• neutral - "0".

Name of the product		Group	blood
	I	II	III	IV
Cereals and flour products
French fries	—	—	—	0
Rice waffles	0	+	+	+
Warm products with yeast	—	—	0	0
buckwheat	0	+	—	—
Cornstarch	—	0	—	—
Gris	—	—	0	0
Pearl barley	0	0	—	0
Barley porridge	0	0	—	0
corn	—	0	—	—
pasta	—	—	0	0
Buckwheat flour	0	+	—	—
Wheat flour (of hard varieties)	—	—	0	0
Corn semolina and flour	—	0	—	—
Oatmeal	—	+	+	+
Rye flour	0	+	—	+
Muesli	—	—	—	0
Cracker Cookies	—	—	0	0
Oatmeal sweets	—	0	+	0
Millet	0	0	+	+
Rye gingerbread	0	—	0	0
wheat	—	—	—	0
Rice	0	0	+	+
rye	0	+	—	0
Grain bread	—	—	—	0
Whole grain bread	—	—	—	0
Spelled bread	0	0	0	0
Wheat-rye bread	0	0	0	0
Wheat bread	—	0	+	0
Rye bread	0	0	—	+
Rye bread	0	+	—	+
cornflakes	—	0	—	—
Cereals	—	0	+	+
Wheat flakes	—	—	—	0
Barley	0	0	—	0
Juices and drinks
apricot	0	+	0	0
Cherry plum	+	+	0	0
Pineapple	+	+	+	0
an orange	—	—	0	—
Birch	0	0	0	0
Grozdov	0	0	+	+
Cherry	+	+	0	+
called	0	0	—	—
Grapefruit	0	+	0	0
cabbage	—	0	+	+
Cranberry	0	0	+	+
lemon	0	+	0	0
Carrot	0	+	0	0
Cucumber	0	0	0	0
Celery	0	+	0	+
plum	+	+	0	0
Tomato	0	—	—	0
apple cider	—	0	0	0
An apple	—	0	0	0
Decoctions and herbal teas
hawthorn	0	+	0	+
Valerian	0	+	0	0
Ginseng	0	+	+	+
St. John's Wort	—	+	0	0
Strawberry leaves	—	0	0	+
Linden tree	+	0	—	—
burp	—	+	0	+
raspberries	0	0	+	0
Podbel	—	0	—	—
Mint	0	0	0	0
Dandelion	+	0	0	0
Parsley	+	0	+	0
chamomile	0	+	0	+
Licorice root	0	0	+	+
yarrow	0	0	0	0
thyme	0	0	0	0
Echinacea	0	+	0	+
Rosehips	+	+	+	+
Dairy products
Full-fat milk	—	—	0	—
Yoghurt	—	0	+	+
Food casein	—	—	0	0
Kefir	—	0	+	+
Goat milk	—	0	+	+
Skimmed milk	—	—	+	0
Milk serum	—	—	0	0
Ice cream	—	—	—	—
cream	—	—	0	—
Cream	—	0	+	+
Cow's milk cheese	—	—	0	0
Sheep cheese	0	0	+	+
Melted cheese	—	0	0	—
Cottage cheese	0	0	+	+
Homemade cottage cheese	0	0	+	+
Oil and fats
Cod liver oil	0	0	0	0
Margarine	0	0	—	—
Peanut butter	—	—	—	0
Coconut oil	—	—	—	—
Corn oil	—	—	—	—
Linseed oil	+	+	0	0
Olive oil	+	+	+	+
Sunflower oil	0	0	—	—
Butter	0	—	0	—
Soybean oil	0	0	—	0
Cottonseed oil	—	—	—	—
Nuts and seeds
Peanut	—	+	—	+
Walnuts	+	0	0	+
Pine nuts	0	0	—	0
Almonds	0	0	0	0
hazelnuts	0	0	—	—
Poppy seed	—	0	+	+
Sunflower seeds	0	0	—	—
Pumpkin seeds	+	+	—	—
Pistachio nuts	—	—	—	0
Vegetables and mushrooms
Sweet potato	+	—	+	+
swedish	0	0	+	0
Oyster mushrooms	0	+	0	0
Daikon	0	0	0	0
Zucchini, zucchini	0	0	0	0
White Cabbage	—	—	+	0
Broccoli	+	+	+	+
Brussels sprouts	—	0	+	0
Chinese cabbage	—	—	+	0
Red cabbage	—	—	+	0
cabbage	+	+	+	+
Cauliflower	—	—	+	+
potatoes	—	—	—	0
Kohlrabi	+	+	0	0
watercress	+	+	+	+
Green onion	0	+	0	0
Leek	+	+	0	0
Chives	+	+	0	0
Carrot	0	+	+	0
cucumbers	0	0	0	+
Parsnip	+	+	0	+
Hot pepper	+	—	+	+
Sweet pepper	0	—	+	+
rhubarb	—	—	—	—
Radish	0	0	—	—
Radish	0	0	—	—
turnip (turnip)	+	+	0	0
Head lettuce	0	0	0	0
Leaf salad	0	0	0	—
Beetroot	0	0	0	0
Beetroot	+	+	+	+
Celery	0	0	0	+
Asparagus	0	0	0	0
tomatoes	0	—	—	0
Jerusalem artichoke	+	+	0	0
pumpkin	+	+	—	0
Chicory	+	+	0	0
champignons	—	—	0	0
spinach	+	+	0	0
Legumes
Soy	0	+	+	+
navy beans	—	—	+	+
Black beans	0	+	—	—
Green peas	0	0	0	0
Green peas	0	0	0	0
Soy milk	+	+	0	0
Soy cheese	+	+	0	0
White beans	0	0	0	0
Spotted bean	+	+	—	+
Lentils	—	+	—	+
Herbs and spices
Vanilla	—	0	0	0
Carnation	0	0	0	0
Mustard	0	+	0	0
Fruit jam and jelly	0	0	0	0
Ketchup	—	—	—	—
coriander	0	0	0	0
cinnamon	—	0	—	0
Bay leaf	0	0	0	0
mayonnaise	0	—	—	0
Honey	0	0	0	0
nutmeg	—	0	0	0
paprika	0	0	0	0
Pepper curry	+	0	+	+
Pepper	—	—	0	—
Parsley	+	0	+	+
sugar	0	0	0	0
Pickles and marinade	—	0	0	—
cumin	0	0	0	0
Dill	0	0	0	0
white vinegar	—	—	0	—
Wine vinegar	—	—	0	—
Apple vinegar	—	—	0	—
slice	0	0	0	0
horseradish	0	0	+	+
Chocolate	0	0	0	0
Fruits and berries
avocado	—	0	—	—
Cherry plum	+	+	+	+
Pineapple	0	+	+	+
an orange	—	—	0	—
watermelon	0	0	0	0
banana	0	—	+	—
Berberis	0	—	—	—
Cranberry	0	+	+	+
Grozdov	0	0	+	+
Cherry	0	+	0	+
Blueberry	0	+	0	0
called	0	0	—	—
Grapefruit	0	+	0	+
Pear	0	0	0	0
Melon	—	—	0	0
Blackberry	—	+	0	0
raisins	0	0	0	0
fig	+	+	0	+
Kiwis	0	0	0	+
Strawberry	—	0	0	0
Cranberry	0	+	+	+
Gooseberry	0	0	0	+
Lemon	0	+	0	+
raspberries	0	0	0	0
tangerine	—	—	0	0
Green olives	—	—	—	0
Black olives	—	—	—	0
Nectarine	0	0	0	0
Coconut	—	—	+	+
Peach	0	0	0	0
plum	+	+	+	+
black currant	0	0	0	0
Persimmon	0	0	—	—
cherries	+	+	0	+
Blueberry	0	+	0	0
Prunes	+	+	0	0
An apple	+	+	+	+
Seafood
Carp	0	+	0	0
smell	0	0	0	0
Catfish	—	—	0	0
caviar	—	—	—	+
Squid	0	—	0	—
Halibut	0	—	+	—
Salmonidae	+	+	+	+
Smoked salmon	—	—	—	—
Mackerel	+	+	+	+
Seaweed	+	0	—	0
Sea bass	0	0	+	+
River perch	0	0	0	0
Sturgeon	+	0	+	+
halibut	+	—	+	—
Crustaceans	0	—	—	—
Marinated herring	—	—	+	—
Fresh herring	+	+	0	0
Salted herring	—	—	0	—
Whitefish	+	+	+	+
River pike	+	0	+	+
catfish	—	—	0	0
Zander	0	+	+	+
a fever	+	+	+	+
Tuna fish	0	0	0	+
Acne	0	—	—	—
Mackerel	+	+	+	+
trout	+	+	+	+
Heck	+	—	+	—
Meat products, poultry, eggs
ham	—	—	—	—
beef	+	—	0	—
Minced beef	+	—	0	—
veal	+	—	0	—
Bacon	—	—	—	—
mutton	+	—	+	+
Rabbit meat	0	—	+	+
a goose	—	—	—	—
a duck	0	—	—	—
Turkey meat	+	0	0	+
Broiler chickens	0	0	—	—
eggs	0	0	+	0
Chicken	0	0	—	—
ham	—	—	—	—
heart	+	—	—	—
Liver	+	—	0	0
Salo	—	—	0	0
Pork	—	—	—	—
Other drinks
White wine	0	0	0	0
Red wine	0	+	0	0
I drink water	+	+	+	0
Vodka	—	—	—	—
Coke	—	—	—	—
Cognac	—	—	—	—
Coffee black	—	+	0	+
Lemonade	—	—	—	—
Alcohol tinctures	—	—	—	—
Beer	0	—	0	0
Carbonated drinks	+	—	—	0
Green tea	0	+	+	+
Black tea	—	—	0	—

Diet according to blood type 1

The most common in the world is the first positive blood group. It is most common among Eastern Slavs and American Indians.

People with the first blood group are universal donors, that is, this blood group is suitable for absolutely everyone. By the way, mosquitoes prefer the first blood type more than all others.

Characteristics of feeding behavior (hunter, carnivore)

Absolutely all ancient people living in a primitive communal system had the first blood type, and all others arose through mutation.

Now remember the history of the ancient world, archaeological excavations and the conclusions of scientists - 40, 000 years ago primitive people lived by hunting and gathering. Their main diet consisted of meat, meat and more meat and only then roots, herbs and those few edible fruits and berries that grew wild in the forests.

Thus, the owners of the first group carry the genes of the most ancient hunters, and their body at the genetic level requires as much protein as possible. The diet, unfortunately, is the poorest. If you decide on such a diet, then you will have to give up a huge number of favorite foods.

The first blood type diet includes meat, fish and vegetables. It is better not to consume milk and its derivatives at all.

Allowed and prohibited products

	What you can eat	What to limit	Neutral products
meat	Beef, veal, lamb, turkey, offal (liver, heart), ground beef.	Ham, leg, smoked meats, pork, lard, goose.	Rabbit, duck meat, broiler chicken, chicken, eggs.
Fish and seafood	Flounder, sturgeon, seaweed, fresh herring, pike, cod, mackerel, trout, hake.	Salted and marinated herring, catfish, caviar, smoked salmon, catfish.	Carp, smelt, flounder, squid, perch, pike, tuna, eel, crustaceans.
Butter	Olive and linseed.	Peanuts, corn, cottonseed, soy.	Cod liver oil, margarine, soy, sunflower and butter.
Nuts and seeds	Nuts, pumpkin seeds.	Peanuts, poppy seeds, pistachios.	Almonds, hazelnuts, pine nuts, sunflower seeds.
Dairy products	—	Almost all dairy products.	Sheep and cottage cheese, cottage cheese.
Vegetables and fruits	Broccoli, kale, kohlrabi, watercress, leek, onion, parsnip, chili pepper, turnip, Jerusalem artichoke, pumpkin, chicory, spinach, cherry, figs, plums, cherries, prunes, apples.	White cabbage, Brussels sprouts, Chinese cabbage, red cabbage, cauliflower, potatoes, rhubarb, mushrooms, lentils, avocados, oranges, cantaloupe, blackberries, tangerines, olives.	Zucchini, green onions, carrots, cucumbers, sweet peppers, radishes, radishes, lettuce, lettuce, beets, celery, asparagus, tomatoes, black beans, green peas, green peas, white beans, pineapple, watermelon, banana, cranberries, grape, cherry, blueberry, pomegranate, grapefruit, pear, raisin, kiwi, cranberry, gooseberry, lemon, raspberry, nectarine, peach, currant, persimmon, blueberry.

Sample menu for one day

• breakfast– grilled beef steak, salad of fresh vegetables.
• Breakfast– apple or other allowed fruit in season.
• Dinner– baked trout, green tea.
• Snack– a handful of walnuts.
• Dinner– sea cocktail with seaweed.

Diet according to blood type 2

No less common group. It is literally several hundred years younger than the first and was formed by mutation after ancient hunters decided to settle down and engage in agricultural work.

People with blood type O produce more of the hormone cortisol, which helps deal with stress. In addition, they are, unfortunately, prone to alcoholism.

Characteristics of feeding behavior (farmer)

25, 000 years ago, carnivorous hunters learned to work the land and receive its gifts. This is the very beginning of the development of agricultural life. People began to build settlements, cultivate fields, plant cereals and vegetables.

There was less protein food, animals moved away from people and meat became more difficult to obtain.

Sometimes the second blood type is called "vegetarian". Most of its carriers live in Europe.

The diet of people with the second blood group should include vegetarian dishes, fish, poultry and dairy products. But it is advisable to give up coffee, beans and meat.

Allowed and prohibited products

	What you can eat	What to limit	Neutral products
meat	—	Beef, veal, lamb, offal (liver, heart), ground beef, ham, bacon, ham, goose and duck meat, pork, rabbit, lard.	Eggs, broiler chickens, chicken, turkey.
Fish and seafood	Varieties of salmon, carp, mackerel, fresh herring, cod, mackerel, trout.	Squid, catfish, caviar, halibut, flounder, smoked salmon, catfish, crustaceans, salted herring.	Smell, seaweed, pike, tuna, perch, sturgeon.
Butter	Olive and linseed.	Peanut, coconut, corn, cotton, butter.	Fish oil, margarine, soy and sunflower.
Nuts and seeds	Peanuts, pumpkin seeds.	Pistachio nuts.	Almonds, hazelnuts, poppy seeds, sunflower seeds, pine and walnuts.
Dairy products	—	Milk, ice cream, cream, whey, cow's cheese.	Yogurt, kefir, goat's milk, cream, sheep and cottage cheese, cottage cheese.
Vegetables and fruits	Broccoli, white beans, kohlrabi, watercress, green onions, leeks, onions, carrots, parsnips, turnips, squash, chicory, spinach, black beans, kidney beans, lentils, cherries, pineapples, cranberries, cherries, blueberries, grapefruit, blackberries, figs, blueberries, lemon, plums, cherries, blueberries, prunes, apples.	Tomatoes, white and cauliflower cabbage, mushrooms, olives, hot and sweet peppers, potatoes, rhubarb, tangerines, bananas, oranges.	Black pepper, nutmeg, coriander, cloves, radishes, beets, cucumbers, zucchini, fennel, Brussels sprouts, radishes, lettuce, celery.

Sample menu for one day

• breakfast- buckwheat porridge, Korean carrots, green tea.
• Breakfast– any permitted fruits and vegetables.
• Dinner– boiled chicken breast with a garnish of green beans.
• Snack- carrot juice.
• Dinner– fruit salad with cottage cheese.

Diet according to blood type 3

The third group is quite rare and is more characteristic of Asian peoples - they were known in ancient times for their huge herds of livestock - horses, cows, goats and sheep. Of course, they had to go from place to place to feed the animals.

Peculiarities of feeding behavior (nomad)

As soon as milk and milk products began to be actively introduced into the diet, and this happened about 10, 000 years ago, the blood mutated again.

The largest number of people with the third blood group live in Asia - these are hereditary nomads.

This type of people are the luckiest - they practically have no restrictions, they are omnivores. It is necessary to exclude semi-finished products, smoked meats and alcohol.

Allowed and prohibited products

	What you can eat	What to limit	Neutral products
meat	Lamb, rabbit, eggs.	Ham, bacon, pork, duck, goose and chicken, chicken.	Beef and ground beef, turkey, lard.
Fish and seafood	Almost all types of fish.	Smoked salmon, caviar, seaweed, eel, crustaceans.	Carp, bream, perch, herring, tuna, catfish.
Butter	Olive.	Margarine, peanuts, coconut, corn, cottonseed, soy, sunflower.	Oil and linseed, cod liver oil.
Nuts and seeds	Mac.	Peanuts, pine nuts, hazelnuts, pumpkin and sunflower seeds.	Nuts, almonds.
Dairy products	Yogurt, kefir, goat's milk, cream, sheep's cheese, cottage cheese.	Ice cream.	Whole milk, cheese, whey, cream.
Vegetables and fruits	Cauliflower, white and red cabbage, carrots, broccoli, hot and sweet peppers, beets, watercress, pineapples, cranberries, bananas, grapes, apples, blueberries, plums.	Corn, lentils, beans, potatoes, radishes, radishes, tomatoes, pomegranate, avocado, pumpkin, barberry, olives, persimmon.	Cantaloupe, spinach, watermelon, grapefruit, cherry, fig, blueberry, raisin, pear, blackberry, blueberry, lemon, kiwi, strawberry, gooseberry, prune, raspberry, nectarine, currant, peach, cherry, fennel, kohlrabi, onion, zucchini, asparagus, parsnip, turnip, beetroot, celery, Jerusalem artichoke.

Sample menu for one day

• breakfast– boiled eggs, cottage cheese, herbal tea.
• Breakfast– fruits in season.
• Dinner– mushroom cream soup, rabbit stew.
• Snack- natural yogurt with pieces of banana.
• Dinner– veal boiled with green peas.

Diet according to blood type 4

The fourth group was formed by the mixing of the second and third groups, after people began to live in large settlements and cities.

People with blood type IV are more likely to have senile dementia and Alzheimer's disease. But they are also universal donors of plasma, which is very valuable in the treatment of burns.

Peculiarities of eating behavior (enigma)

This blood is the youngest, its age does not exceed two thousand years. It is truly unique in its composition and is resistant to autoimmune and allergic diseases.

These people have a mixed type of diet, there are quite a few dietary restrictions. But it is recommended for them to eat as much natural organic food as possible.

Allowed and prohibited products

	What you can eat	What to limit	Neutral products
meat	Lamb, rabbit, turkey.	Veal and ground beef, ham, bacon, poultry, pork.	Eggs, liver, fat.
Fish and seafood	Salmon, caviar, mackerel, perch, sturgeon, pike, pike, cod, tuna, trout, mackerel.	Squid, halibut, smoked salmon, halibut, salted herring, eel, hake.	Algae, carp, bream, perch, catfish, fresh herring.
Butter	Olive.	Margarine, butter, coconut, corn, cottonseed, sunflower.	Peanut, soy, flaxseed, cod liver oil.
Nuts and seeds	Peanuts, poppy seeds, walnuts.	Pumpkin and sunflower seeds, hazelnuts.	Almonds, pistachios, pine nuts.
Dairy products	Yogurt, kefir, goat's milk, sheep's cheese, cottage cheese, cream.	Ice cream, cream, whole milk.	Whey, cheese, skimmed milk,
Vegetables and fruits	Cabbage, beets, potatoes, figs, celery, kiwi, cherries, pineapple.	Black olives, green peppers, corn, bananas, coconuts, pomegranate.	Carrots, kohlrabi, horseradish, Chinese cabbage, apples, apricots, watermelon.

Sample menu for one day

• breakfast– whole wheat bread, tofu (bean curd), radish salad.
• Breakfast- vegetables or cottage cheese.
• Dinner– baked fish with mashed potatoes, carrot salad.
• Snack- yoghurt.
• Dinner– omelette, lettuce, whole grain bread.

Does the Rh factor affect nutrition?

We know from school that there are four blood groups in total, and when the Rh factor is taken into account, their number doubles. It was first discovered after researching rhesus monkeys, which is why it got its name. The Rh factor can be positive and is designated (Rh+) or negative (Rh-). It shows the presence or absence of an antigen (protein) that is on the surface of red blood cells (erythrocytes).

But in fact, the division of blood into only four groups is arbitrary - if we take into account all the properties of blood, then there will be many more of them. D'Adamo ignores this fact.

D'Adamo's famous book does not mention the influence of the Rh factor at all. Since more than 80% of the world's population has a positive Rh factor, the diet was created specifically for these people.

Diet contraindications

Without prior consultation with your doctor, it is forbidden for people with the following diseases to follow a diet on their own:

• diabetes;
• chronic digestive problems;
• hematopoiesis disorder;
• ORVI.

In addition, if any diseases have worsened, it is also not recommended to go on a diet until you feel better.

In no case do not experiment on yourself during pregnancy or breastfeeding, remember that you are responsible not only for your life, but also for the baby.

Weight loss reviews

• "This is an ideal diet for people who have no health problems. But if you are overweight, then a priori there are all kinds of diseases, so the diet stops working. It is convenient, of course, that there is a wide selection of products, but I did not like this method - the doctor forbade eating all the products allowed in the table. It turns out that the table almost 90% contradicts the doctor's recommendations.
• "I have no medical education, but I clearly see the huge flaws - the diet is completely unscientific. One of them is that people with the second group should bet on vegetarian food, and those with the third and fourth are omnivores, but they originate from the second. In general, I won't even try.
• "I lost 10 kg in a few months! Blood type diet is very cool, easy to lose weight. I think you can stay on this diet for the rest of your life. I recommend this wonderful diet to everyone who wants to lose weight! "
• "The blood type diet is complete nonsense. Do not torture yourself with these healthy, harmful and neutral products. Eat everything in moderation, without fanaticism. If you want something sweet, eat 1-2 candies, not a whole bar of chocolate, if you want bread, cut off a piece and eat it, but do not starve.
• "I showed the approved products for the second blood type at work - the whole team laughed, wiped their tears and ate a meat cutlet (yes, yes, half of our team are "farmers"). Honestly, I have not seen a more stupid and completely unacceptable diet! "

Opinions and criticism of doctors

The blood test diet is not approved by doctors. After all, each person is so individual that it is necessary to conduct complex studies and have data on more than sixty specific genes that are responsible for endocrine and enzyme activity, and only then to create a diet. And the blood group in this case is too generalizing a factor and cannot be responsible for the correctness of a specific person's menu.

Thus, doctors clearly believe that D'Adamo's theory has no scientific basis, is little studied, but does not cause much harm. And in some cases, it even helps to stimulate the body and activate a faster metabolism.

In addition, D'Adamo included really harmful products among the prohibited foods for all blood types - sausages and smoked meats, bought sauces, ice cream, carbonated drinks, alcohol and some others.

Well, do not forget about the placebo effect - a person believes and loses weight.

Pros and cons of the diet

Advantages:

• a huge list of allowed products;
• Easy to carry;
• ability to create a varied and balanced menu;
• you can stick with it for a long time.

disadvantages:

• there is no clear plan how, when and in what quantities to consume certain products;
• the diet has no scientific basis, all conclusions are too general;
• another profitable business for nutritionists and, of course, the creator himself.

Conclusion

As practice shows, some people really managed to lose weight on this diet. But they note that the results are not permanent - the weight invariably returns. So you will need to eat right for almost your entire life.