All right. Eggs are one of the best sources of nutrition for human beings. Eggs contain a lot of vitamins and minerals and protein with high biological value. For people, the protein quality of eggs is the best, second only to breast milk. An egg contains half an apple or half a glass of milk, but it also contains 8% phosphorus, 4% zinc, 4% iron, 12.6% protein, 6% vitamin D, 3% vitamin E, 6% vitamin A, 2% vitamin B, 5% vitamins B2 and 4. These nutrients are essential to the human body, and they play an extremely important role, such as repairing human tissues, forming new tissues, consuming energy and participating in complex metabolic processes. According to the analysis, every100g of eggs contains14.7g of protein, mainly ovalbumin and ovalbumin, and contains 8 kinds of amino acids necessary for human body, which is very similar to the composition of human protein. The absorption rate of protein in eggs can reach 98%. Every100g of egg contains11~15g of fat, which is mainly concentrated in yolk and easily digested and absorbed by human body. Egg yolk is rich in lecithin, sterol, egg yolk, calcium, phosphorus, iron, vitamin A, vitamin D and B vitamins. These ingredients have great benefits for improving the function of the nervous system, so eggs are better brain food. Egg yolk contains more cholesterol, which can be as high as 100 mg per100 g. Therefore, many people, especially the elderly, are cautious about eating eggs, fearing that eating eggs will lead to increased cholesterol and atherosclerosis. In recent years, scientists have found that eggs are rich in lecithin despite their high cholesterol content. When lecithin enters the blood, it will make the particles of cholesterol and fat smaller and remain suspended, thus preventing the deposition of cholesterol and fat on the blood vessel wall. Therefore, scientists believe that for the elderly with normal cholesterol, eating 2 eggs a day will increase the cholesterol in 100 ml of blood by up to 2 mg and will not cause arteriosclerosis. But you shouldn't eat too much. Eating too much is not conducive to gastrointestinal digestion, causing waste and increasing the burden on liver and kidney. It is advisable for everyone to eat 1 ~ 2 eggs every day, which is beneficial to digestion and absorption and can meet the needs of the body. Eggs are an ideal natural food for human beings, and we should also pay attention to science in eating. For the elderly, it is best to boil eggs, lie eggs, steam eggs and stir eggs, because frying, frying and frying are delicious, but they are difficult to digest. If eggs are processed into salted eggs, their calcium content will increase obviously, from 55 mg per 100 g to 5 12 mg, which is about 10 times that of fresh eggs. It is especially suitable for middle-aged and elderly people with osteoporosis. Also need to be reminded, never eat raw eggs. Some people think that eating raw eggs is nutritious, which is unscientific. 1. Eggs are rich in protein, fat, vitamins and minerals needed by human body, such as iron, calcium and potassium. Protein is a high-quality protein, which can repair liver tissue damage; 2. It is rich in DHA, lecithin and yolk protein, which is beneficial to the development of nervous system and body, can strengthen brain and improve intelligence, improve memory and promote liver cell regeneration; 3. Eggs contain more trace elements such as vitamin B, which can decompose and oxidize carcinogens in the human body and have anti-cancer effects. Suitable for most people. It is also an ideal food for babies, pregnant women, lying-in women and patients. It can be said that eggs are both economical and essential food in our life. But the eggs with such rich nutrition are not as many as possible, and not everyone can safely eat them. Protein in the eggs of patients with high fever is completely protein, which can be decomposed into more redundant calories when it enters the body. This is the so-called special dynamic effect of food. This special dynamic effect is the protein effect, and the heating effect can reach about 30%. Therefore, after eating eggs, patients with fever produce more heat in the body and reduce heat dissipation, just like adding fuel to the fire, which is not good for reducing fever. In addition, the secretion of digestive glands and the activity of various digestive enzymes in patients with fever are reduced, so they should eat a light diet and eat less foods containing high protein. Eating more egg yolk in patients with hepatitis will increase the burden on the liver and is not conducive to rehabilitation. This is because egg yolk contains fatty acids and cholesterol, both of which are metabolized in the liver. The burden of liver is too heavy, which is not conducive to the recovery of hepatitis. Therefore, hepatitis patients should not eat egg yolk. Patients with nephrotic nephritis have decreased renal function and metabolism, decreased urine volume, and all metabolites in the body cannot be excreted by the kidneys. Eating too many eggs will increase urea in the body, leading to aggravation of nephritis and even uremia. Eating eggs in the late stage of hypertension can cause middle renal arteriosclerosis, systemic lupus erythematosus with renal damage and chronic renal failure caused by various chronic kidney diseases. People should eat eggs carefully or follow the doctor's advice. Old people's eggs have high cholesterol content. It is generally believed that cholesterol can lead to hyperlipidemia, coronary heart disease, atherosclerosis and other senile diseases, which leads to the saying that the elderly should not eat eggs. But in recent years, some scientists have proved through experiments that although eggs contain cholesterol, they are also rich in lecithin, which has a therapeutic effect on cardiovascular diseases. When lecithin is absorbed into the blood, cholesterol and fat particles in the blood become smaller and remain suspended, thus reducing the deposition of cholesterol and fat on the blood vessel wall. Therefore, the elderly with normal serum cholesterol concentration will not cause atherosclerosis if they eat an egg every day. On the contrary, other nutrients in eggs can bring many benefits. Some people who are allergic to protein will have a stomachache after eating eggs, which is caused by being allergic to eggs. Protein of eggs has antigenicity, which can cause allergic reaction by interacting with sensitized mast cells with antibodies on the surface of gastrointestinal mucosa. Mast cell granules release chemicals such as histamine, which makes gastrointestinal mucosa hyperemia, edema and gastrointestinal spasm, causing allergic symptoms such as stomach pain or abdominal pain and diarrhea. Therefore, not eating eggs or food containing egg ingredients is the most effective prevention and control method. The most nutritious cooking method: there are many ways to eat eggs. In terms of nutrient absorption and digestibility, boiled eggs are 100%, scrambled eggs are 97%, tender fried eggs are 98%, old fried eggs are 8 1. 1%, boiled eggs with milk are 92.5%, and raw eggs are 30% ~ 50%. From this point of view, boiled eggs are the best way to eat, but pay attention to chewing slowly, otherwise it will affect absorption and digestion. But for children, steamed egg soup and egg drop soup are the most suitable, because these two methods can loosen protein and be easily digested and absorbed by children.

Note: eat less tea eggs, because tea contains acidified substances, which will stimulate the stomach and affect the digestive function of the gastrointestinal tract when combined with iron in eggs. How many eggs do you eat a day? Eggs are high-protein foods. If you eat too much, it will lead to an increase in metabolites and increase the burden on the kidneys. Generally speaking, there is one for children and the elderly, and two for teenagers and adults. Protein or yolk: The correct way to eat is to eat the whole egg. Protein contains more protein, while other nutrients are more in egg yolk.

Matters needing attention

Eggs must be cooked, not eaten raw, and you should be careful of the contaminated bacteria on the eggshell when you beat eggs. Babies, the elderly and the sick should also cook, lie down, steam and throw eggs. Hairy eggs and rotten eggs cannot be eaten. People with coronary heart disease should not eat too many eggs, and it is better to eat no more than 1 a day. For hypercholesterolemia, especially severe patients, we should try to eat less or not, or we can eat protein instead of egg yolk, because the cholesterol content in egg yolk is three times higher than that in protein, reaching 0/00g 1400 mg/kloc. Patients with kidney disease should be careful to eat eggs. Eggs are the food that people often eat. Many people know that eggs have high nutritional value, but they ignore the dietary taboos of eating eggs. In daily diet, eating eggs with sugar and rabbit meat is the biggest misunderstanding. Many places have the habit of eating poached eggs in sugar water. In fact, when eggs are cooked with sugar, amino acids in the protein of eggs will form a combination of fructosyl lysine. This substance is not easily absorbed by the human body and will have a negative impact on health. Another dietary taboo of eggs is that they can't be eaten with rabbit meat. "Compendium of Materia Medica" says: "Eggs and rabbit meat become diarrhea." Rabbit meat tastes sweet, sour and cold, while eggs taste sweet, flat and slightly cold. Both of them contain some bioactive substances, which will react when eaten, stimulate the gastrointestinal tract and cause diarrhea.

Don't drink tea immediately after eating eggs. Some people are used to drinking tea immediately after eating high-quality protein food such as meat, eggs and seafood to help "taste" and "digest". In fact, this practice is unscientific. Because tea contains a lot of tannic acid, tannic acid and protein synthesize astringent protein tannic acid, which slows down intestinal peristalsis, thus prolonging the retention time of feces in the intestine, which not only easily causes constipation, but also increases the possibility of toxic substances and carcinogens being absorbed by the human body, which is harmful to human health. Life tip: avoid eating immature eggs. Egg protein contains avidin, which will affect the absorption of biotin in food and cause symptoms such as loss of appetite, general weakness, muscle pain, skin inflammation and eyebrow removal. Eggs contain antitrypsin, which affects the digestion and absorption of protein. These two substances can not be decomposed in immature eggs, thus affecting protein's digestion and absorption. Eggs will carry bacteria during the formation process, and immature eggs can't kill bacteria, which is easy to cause diarrhea. Therefore, eggs should be eaten after high temperature, and do not eat immature eggs. The protein structure of raw eggs is dense, and most of them can't be absorbed by human body. Only when cooked protein becomes soft can it be digested and absorbed by human gastrointestinal tract. Raw eggs have a special fishy smell, which will cause central nervous system inhibition and reduce the secretion of digestive juices such as saliva, gastric juice and intestinal juice, thus leading to loss of appetite and indigestion. Taboo: Eggs are very similar to rabbit meat, and both contain some bioactive substances. If fried together, it is easy to produce substances that stimulate the gastrointestinal tract and cause diarrhea, so it is not suitable for eating together. Eggs are similar to raw onions and garlic, but onions, garlic and eggs are incompatible in gender, taste and function. Eggs and soybean milk are gram-shaped, which reduces the nutritional value. Eggs and sweet potatoes are similar, and the same food is more difficult to digest; Eggs and monosodium glutamate can cause excessive intake of glutamic acid, which is not conducive to digestion and nervous system. Eggs and beans are grams.

Not suitable for raw food.

Eggs contain 10 kinds of protein. After the eggs are cooked, the regular arrangement of polypeptide chains in protein molecules becomes disordered, which is the denaturation of protein. Because the spatial structure of denatured proteins has been disrupted, it is easier to decompose than the original orderly arrangement. So it is easily digested and absorbed by the human body. Some people think that raw eggs are easier to digest and absorb and more nutritious than cooked eggs. Eating raw eggs has the following disadvantages: (1) Raw eggs are difficult to digest and waste nutrition. Protein in human eggs is mainly digested and absorbed by pepsin and trypsin in the small intestine. There is an anti-trypsin substance in the egg white of raw eggs. Will hinder the digestion and absorption of protein. Cooked eggs, antitrypsin substances no longer exist, so they are easily digested and absorbed by the human body. (2) Raw eggs contain ovalbumin and an antibiotic protein, which can make the vitamin B in food ineffective, and the antibiotic protein will accumulate in the human body, hindering the absorption of biotin by the human body. Biotin is one of the vitamins needed by human body. Without biotin, the human body will suffer from loss of appetite, mental fatigue, skin inflammation, desquamation, hair loss and weight loss, which will affect human health. (3) About 65,438+00% fresh eggs contain pathogenic salmonella, mold or parasite eggs. If the eggs are not fresh, the carrier rate will be higher. Bacteria can enter eggs directly from the ovary or the laying place of hens. These bacteria are afraid of high temperature. Cooking for 8 minutes to 10 minutes will kill the bacteria inside and outside the egg. Protein of eggs is rich in essential amino acids, and its composition ratio is suitable for human needs. Eggs are also a good source of vitamins and inorganic salts and a kind of food with high nutritional value. Some people like to eat raw eggs. I think the nutrients of eggs are destroyed after they are cooked. I think it is better to eat them raw than cooked. In fact, this way of eating is not only useless but also harmful. First, eggs are produced by the ovaries and cloaca of chickens, with high bacterial content, so the surface of eggshells and even yolk may have been contaminated by bacteria, which may easily cause parasitic diseases, intestinal diseases or food poisoning if eaten raw. Second, raw eggs have a fishy smell, which can inhibit the central nervous system, make people lose appetite, and sometimes make people vomit. Third, raw egg white contains a substance called avidin, which will hinder the absorption of biotin contained in egg yolk. After eggs are cooked, they can kill bacteria inside and outside the eggs and destroy avidin, so eggs should not be eaten raw. Many places have the habit of eating poached eggs in sugar water. In fact, when eggs are cooked with sugar, amino acids in the protein of eggs will form a combination of fructosyl lysine. This substance is not easily absorbed by the human body and will have a negative impact on health. Eating an egg when drinking soybean milk in the morning, or boiling the egg in soybean milk, is also the eating habit of many people. Soymilk is sweet, and contains many nutrients such as plant protein, fat, carbohydrate, vitamins and minerals. Drinking alone has a strong nourishing effect. However, there is a special substance called trypsin, which, when combined with ovalbumin in egg white, will cause the loss of nutrients and reduce its nutritional value.