1, detailed analysis of human cholesterol
First of all, cholesterol is an essential nutrient to maintain human health. We can list many benefits of cholesterol:
1. Cholesterol is an important component of human cells;
2. Cholesterol is the precursor of many important hormones and vitamins;
Cholesterol is an integral part of brain, liver and other important organs.
Second, only about 30% of cholesterol comes from diet, while 70% comes from body synthesis. If cholesterol in the diet is strictly restricted, the synthesis in the body will increase; On the contrary, if the dietary intake of cholesterol is high, the synthesis in the body will be reduced; Generally speaking, the two maintain a dynamic balance. Perhaps, this can explain to some extent why some people who eat vegetarian food for a long time and have low dietary cholesterol intake may also have elevated blood cholesterol.
2. How do people with high cholesterol eat eggs?
Eggs are not only rich in protein, but also their amino acid composition ratio is very suitable for human needs, and the utilization rate in human body can reach over 95%. It is a natural food with comprehensive nutrition, so eggs are called "ideal nutrition banks".
It is reasonable and beneficial for healthy people with normal blood lipids to eat a whole egg every day. Its nutritional contribution to human body is far greater than its "possible" "high cholesterol" risk. Say "maybe" because so far there is no study showing that cholesterol in eggs has a great influence on cholesterol in blood.
Eggs contain protein, fat, vitellin, lecithin, vitamin A, vitamin D, vitamin E, most B vitamins and minerals needed by human body, such as iron, calcium, phosphorus and potassium, but the content of vitamin C is less. Egg yolk, as one of "iron-supplementing" foods, also plays an important role in preventing iron deficiency anemia. Therefore, eggs are almost perfect food.
Enhance memory: It is recommended that people eat an egg for breakfast every day. Eggs are rich in DHA and lecithin, which is of great benefit to the nervous system and physical development. Lecithin can release choline after being digested, and choline can reach the brain quickly after entering the blood, which can improve the memory of people of all ages.
"Complete protein Model"
The protein of eggs contains all the amino acids needed by human body, and the amino acid pattern is reasonable, which is very suitable for human digestion, absorption and utilization. Nutritionists call it "the complete protein model". The biological value of eggs ranks first among all kinds of foods rich in protein.
Scientists have done experiments to make a group of people eat ten eggs a day for a month, and found that there is no difference in cholesterol in their blood compared with those who don't eat eggs. The reason should start from the source of cholesterol in the human body.
3, the source of human cholesterol
One is produced by the liver itself, accounting for about 70% ~ 80% of the total; The other is the cholesterol eaten, called exogenous cholesterol, which accounts for about 20%~30% of the total. When the exogenous cholesterol intake is too high, the body will correspondingly reduce the amount of cholesterol produced by itself, so that the two can achieve a dynamic balance. This can also explain why some people eat vegetarian food for a long time and have low cholesterol intake in their diet, which will also lead to an increase in blood cholesterol.
People who already have hyperlipidemia and high cholesterol can also eat eggs, but considering the risk factors, it is recommended to eat a boiled egg every other day, which is equivalent to eating half an egg yolk every day. Patients with high cholesterol should control eating more foods such as pig brain, crab roe, roe, squid, shrimp head, fat and animal viscera. The cholesterol content of pig brain of the same size is about several times that of egg yolk.
4. Lecithin regulates cholesterol
Egg yolk is rich in lecithin, which can regulate and control cholesterol in blood, so if you don't eat egg yolk at all, you will lose the source of lecithin, which is a loss for the regulation of blood lipids.
Lecithin in eggs belongs to animal embryo lecithin and exists in the form of fine emulsified lipoprotein cholesterol particles. Its content, proportion and structure are related to amino acids, omega-3 fatty acids, omega-6 fatty acids and cholesterol. Is appropriate, it can be used by the tissue through the blood vessel wall, so that the cholesterol in the plasma will not increase.
5, eating eggs taboo instructions
1, don't eat sugar immediately after eating eggs.
Eggs can't be cooked with monosodium glutamate, which I believe many housewives already know. But you may not know that eggs can't be boiled with sugar or eaten with sugar.
Many places have the habit of eating poached eggs in sugar water. In fact, it can make amino acids in egg protein form a combination of fructosyl lysine. This substance is not easily absorbed by the human body, so it will have a bad influence on health.
Don't drink tea immediately after eating eggs.
Many people like to use tea to relieve boredom after eating eggs. Especially those who like to drink morning tea to refresh themselves. But at this time, in fact, you ignore that drinking tea after eating eggs will be harmful to your health.
Because tea contains a lot of tannic acid, tannic acid and protein synthesize convergent protein tannic acid, which slows down intestinal peristalsis and prolongs the time of feces staying 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.
Don't drink soybean milk immediately after eating eggs.
Every morning, mothers will carefully prepare breakfast for their children. I hope children can get enough nutrition in the morning. So many mothers put frangipani in soybean milk. Or let the children quench their thirst with soy milk after eating eggs.
In fact, drinking soybean milk with strong nourishing effect alone contains a special substance called trypsin, which combines with ovalbumin in egg white, causing the loss of nutrients and reducing the nutritional value of both.
4. Don't eat undercooked 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 in immature eggs are not decomposed, which affects the digestion and absorption of protein.
Eggs will carry bacteria during the formation process, and bacteria will enter the eggs through the small holes in the eggshell, while immature eggs can't kill bacteria, which will cause diarrhea. Therefore, eggs should be cooked at high temperature before eating, and do not eat immature eggs.