Whether it is the famous duck blood vermicelli soup, or the duck blood and pig blood that we must order when eating hot pot, these animal blood products are the ingredients we often eat on the table. Although common, But for these animal blood products, many friends also have certain misunderstandings about whether pig blood, duck blood, etc. have nutritional value, and whether it is good for the body or not good for health. Today we will take you to clarify Two common misunderstandings of animal blood products.
Misunderstanding 1: Pork blood and duck blood are all toxins, which is harmful to health
Many friends dare not eat or do not want to eat pig blood, duck blood and other animal blood products. The root cause is not Because they don't like the taste or texture, but many people have a deep-rooted understanding that pig blood and duck blood are not clean and have a lot of toxins.
The origin of this cognition is usually not that there will be too many contaminants in the animal slaughter process. In most cases, it is believed that the current pollution, food safety problems are more serious, and there are many toxins in the animal’s body. There are more toxins in the blood, and some friends take the black stool the next day after eating pig blood and duck blood as an example, saying that these are all toxins in animal blood.
The real situation is that whether it is a human or a variety of poultry and livestock animals, in the process of blood circulation, the metabolic waste in the blood will pass through the liver and kidney for continuous circulation, and the liver Detoxification, the filtering effect of the kidneys, will decompose or excrete waste metabolites in the blood as much as possible, and there is no scientific basis for the claim that animal blood contains toxins. If we buy animal blood products produced by regular businesses and obtained from healthy poultry and livestock slaughtered, we don’t have to worry too much about the toxins in the blood.
After eating animal blood, we often find black stools when we defecate on the next day. This is a normal phenomenon. The reason is that animal blood is rich in iron, and our body is very sensitive to iron. There is a certain limit to the absorption of iron. When the intake of iron exceeds the absorption limit of the body, the excess iron combines with the sulfur in the intestine to form black iron sulfide.As a result, black stools may be found during defecation. If friends who have taken iron supplements, even if they do not eat pig blood, they will also find black stools. This is the reason.
This point must be distinguished from blood in the stool. When the gastrointestinal tract is bleeding, it may also be caused by a large amount of blood entering the intestines, resulting in melena. If you do not eat blood products or other If you have iron-rich foods or medicines, you will have black stools or tarry stools. You must pay attention to the possibility of gastrointestinal bleeding.
Misunderstanding 2: Can pig blood cleanse the lungs and dust?
In addition to the above-mentioned friends who dare not eat pig blood and duck blood because of their misconceptions, there are some friends who believe that pig blood can clear the lungs and remove dust, and eat it has a certain detoxification effect. Some friends will eat it when it gets smog. Some pig blood, hope that pig blood can clean the lungs and remove dust. Although eating like this will not cause harm to the body, it is not scientific enough to say that pig blood can clean up the smog particles inhaled in the lungs.
From the perspective of traditional Chinese medicine in my country, pig blood is sweet, bitter in taste, and has a mild nature. It has the effect of clearing the intestines and nourishing blood. Many friends believe that blood products can detoxify and clear the lungs. This is mainly based on this point of view. In fact, the "detoxification" in Chinese medicine theory is not the same as removing dust from the lungs, and clearing the lungs and detoxification. It usually has two meanings. One is to nourish the body and supplement nutrition through the intake of animal blood products; on the other hand, animal blood products such as pig blood and duck blood are digested and absorbed in the intestines. In the process, it can absorb some metabolic wastes in the intestinal tract, help improve bowel movements, and have a certain intestinal cleansing effect. Therefore, if pig blood can detoxify, it mainly plays the role of intestinal cleansing and supplementing nutrients. It is said that blood products such as pig blood can clean the lungs and remove dust, but pig blood and duck blood cannot achieve this effect.
Blood products such as pig blood and duck blood are rich in nutrients and have two advantages over animal meat.In terms of nutritional value, although it is a common and cheap ingredient, the nutritional content of pig blood and duck blood is not low.
First of all, animal blood products are rich in protein, known as "liquid meat". Take our most common pig blood, the protein content in whole blood is as high as 19%, and the total amount of amino acids in whole blood, Exceeding human milk and eggs, it can reach the nutritional composition and intake of protein recommended by WHO. It is a high-quality food for protein supplement.
In addition to being rich in protein, animal blood is also rich in iron, which is a good food for iron and blood. The iron content per 100g is as high as 45mg, which is twice the iron content in pig liver. 20 times the lean pork and 18 times the egg. The iron contained in animal blood is in the form of heme iron compared to the iron contained in other food materials such as plants, which is easier for the human body to absorb. For iron deficiency anemia, or lack of blood due to iron deficiency For the crowd, it is a good choice to eat some pig blood and iron supplements.
In addition to the above two rich nutrients, pig blood also contains folic acid, vitamin B12, vitamin B2 and other B vitamin nutrients, vitamin K, lecithin and other nutrients are also contained in pig blood, so From the perspective of supplementing nutrition for the body, pig blood, known as "liquid meat", is a healthy and high-quality food material.
Compared with animal meat foods, animal blood products have two advantages. One is that their fat content is very low. For the problem of high blood lipids, attention should be paid to the intake of animal fats. For those with restrictions, eating some animal blood can provide the body with various animal vitamins and trace elements nutritional supplements without causing excessive intake of saturated fat to further increase the burden of blood lipid metabolism and affect blood lipids. On the other hand, the content of purine in animal blood products is also very low. It is a low-purine food material. The purine content per 100g of pig blood is only 11.8mg. Therefore, for patients with high uric acid gout For friends in question, animal blood products are also a kind of animal-based foods that can be eaten with confidence, and can be used on the premise of not increasing the level of uric acid.Safely supplement the body with high-quality protein and other nutrients.
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