In daily life, eggs are the most common nutritious food, which is often considered to have the functions of strengthening the brain, improving intelligence, protecting the liver, preventing arteriosclerosis, preventing cancer and delaying aging. However, a 14-year study conducted by Japanese scientists found that compared with their peers, women who eat 1 egg or more every day have a higher mortality rate than women who only eat one or two eggs every week. Japanese scholars chose 9,300 men and women as the research objects, and they all received lifestyle questionnaires at 1980, including what different foods they often eat. Follow-up survey shows that the mortality rate of women who eat one egg a day is 22% higher than that of women who only eat one or two eggs a week (regardless of age, smoking habits and weight). The mortality rate of women who eat two or more eggs a day is higher, but the number of these women is small.
Women who eat the most eggs are also more likely to die of heart disease and stroke, although statistically speaking, the relationship between them is not very close. Scholars believe that this may also be related to the fact that women rarely die from these two diseases.
Nutritionists believe that eggs should be boiled in boiling water for 5-7 minutes. When fried eggs are over-aged, the edges will burn, and the high molecular weight protein contained in egg white will become low molecular weight amino acids, which can often form toxic chemicals at high temperature.
Men eat nothing: the reason is not clear.
Among men, eating eggs is not necessarily related to mortality. Researchers are not clear about the reason for this phenomenon. They speculate that this may be because women know their eating habits better.
Bian Xiao prompt
Under normal circumstances, healthy adults eat 1-2 eggs a day; It is best for the elderly to eat one every day; It is more appropriate for mental workers to eat two eggs a day; Pregnant women, lying-in women, lactating women and the infirm can eat 2-3 eggs a day, not more. Boiled eggs are the best way to eat, but you can't overcook them.
Nutrition experts remind: Try not to eat egg yolk.
To this end, the reporter interviewed relevant nutrition experts. Experts point out that 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, healthy adults should pay close attention to and control the cholesterol intake through other ways such as meat and dairy products. It is advisable to eat 1 egg every day and try not to eat egg yolk, because an egg yolk contains two-thirds of the cholesterol that healthy adults should consume every day.
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Teach you how to pick eggs-hold them in your hand, shake them gently, let them collide with each other and listen carefully; Or shake it in your hand and listen to its sound. Fresh meatballs and eggs collide with each other and make a crisp sound, and the eggs are silently shaken.
Boiled eggs: the most nutritious but not overcooked.
In cooking, boiled eggs are the best way for adults to eat, but they should not be overcooked. It is advisable to cook eggs in boiling water for 5~7 minutes, 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 release protein, which can be easily digested and absorbed by children. (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 boiled water and milk are 92.5%, and raw eggs are 30%~50%).
When fried eggs are over-aged, the edges will burn, and the high molecular weight protein contained in egg white will become low molecular weight amino acids, which can often form toxic chemicals at high temperature. In addition, it should be noted that tea eggs should be eaten less, because tea contains acidified substances, which combine with iron in eggs to stimulate the stomach and affect the digestive function of the gastrointestinal tract.
The misunderstanding of eating eggs
Myth 1: The more eggs a woman eats, the better.
In the process of delivery, the maternal physical exertion is great, the digestion and absorption function is weakened, and the detoxification function of the liver is reduced. After eating in large quantities, the burden of liver and kidney will increase, resulting in adverse consequences. Excessive intake of protein will also produce a lot of ammonia, hydroxyl, phenol and other chemicals in the intestine, which is very toxic to human body, prone to abdominal distension, dizziness, limb weakness, coma and other symptoms, leading to "protein poisoning syndrome". Protein's intake should be calculated according to protein's digestion and absorption function. Under normal circumstances, it is enough for pregnant women to eat about 3 eggs a day.
Myth 2: Eating eggs often has high cholesterol.
No, because egg yolk is rich in lecithin, which is a powerful emulsifier. It can make cholesterol and fat particles extremely fine and pass through the blood vessel wall and be fully utilized by cells, thus reducing cholesterol in the blood. Moreover, lecithin in egg yolk can release choline after digestion, and then enter the blood to synthesize acetylcholine, which is the main substance of neurotransmitters, which can improve brain function and enhance memory.
Myth 3: Raw eggs are more nutritious.
Eating eggs raw is not only unsanitary, but also easy to cause bacterial infection, and there is no nutrition. Raw eggs contain avidin, which affects the absorption of biotin in food and leads to "biotin deficiency" such as loss of appetite, general weakness and muscle pain. In addition, raw eggs contain "antitrypsin", which will destroy the digestive function of human body. As for those "hairy eggs" that have hatched but have not hatched chickens, it is even more unsanitary.