Pig blood, as a common food for ordinary people, can be directly fried, stewed, cold and so on, whether as a hot pot ingredient. Most importantly, pig blood is also called "liquid meat", which has the saying of detoxification and lung washing.

Is pig blood really so good?

From everyone's attitude towards pig blood, we still think it is very beneficial, especially in terms of nutritional value. Every 100 grams of pig blood contains 55 kilocalories, protein 12.2g, 0.3g of fat, E0.2mg of vitamin E, 5 1mg of cholesterol, 8.7mg of iron, 56mg of potassium and 7.94mg of selenium.

Compared with meat, especially in pig blood, the protein content is slightly higher than that of pork, and it belongs to animal protein, which is the closest to the amino acid pattern of human body, and is easily digested and absorbed by the body, which is very beneficial for middle-aged and elderly people to supplement high-quality protein.

In addition, pig blood is low in calories and also contains heme iron, which is more easily used by the body compared with non-heme iron and has a better blood-enriching effect. It is suitable for women with anemia or special periods, such as menstrual period, menopause and pregnancy.

But for the fact that pig blood can detoxify, although it has been found in modern research, the substances produced after protein in pig blood is decomposed by gastric acid may react with metal particles and discharge harmful substances.

Others say that pig blood can detoxify because people excrete black stool after eating pig blood, but this is only people's subjective consciousness. In fact, the real reason for this phenomenon is that there is more heme iron in pig blood. After excessive iron intake, it will undergo redox reaction with sulfide in the intestine, leading to melena.

Very similar to eating pig blood, many people eat pitaya, because there are natural pigments such as anthocyanin and betanin in pitaya, which can not be absorbed by the stomach. After being directly discharged, the stool color will turn red, and the blood that appears at this time is also a normal phenomenon.

Therefore, eating pig blood can't detoxify. As for eating pig blood to wash the lungs, you don't have to believe it. In traditional Chinese medicine, the concept of clearing away lung heat is mainly to use cold food to drive away lung heat, while pig blood itself is just a kind of food. As for the black stool discharged, it is not a normal physiological phenomenon to discharge things from the lungs.

For people who want to raise their lungs, it is even more suggested that they should stop being superstitious about certain foods, even foods with high nutritional value can't play a medical role. If you really want to raise your lungs, you should start with little by little in your life.

For example, lung-nourishing foods, including lily, tremella, banana, loquat, kiwi fruit, pear and wax gourd, should have a balanced diet and moderate exercise. Of course, it is very important to stay away from active and passive smoking and provide a healthy environment for the lungs.

For people who are not suitable for eating pig blood, especially a few days before the stool test, it is best not to eat pig blood to avoid affecting the test results.