[This content is a story-based medical science article, please read it rationally, and do not sit down]
Xiao Zhang stood in the egg section of the supermarket, holding two boxes of eggs in his hand and looking hesitant. One box is white-shell eggs and the other is red-shell eggs. His brow furrowed, as if he were solving a puzzle.
"Gee, that's a real headache!" Xiao Zhang said to himself, "The red ones look so energetic, but the white ones look so pure." Which is more nutritious? "
At this moment, a middle-aged man in a white lab coat walked over and looked curiously at the two boxes of eggs in Xiao Zhang's hand.
"Young man, are you bothering about choosing eggs?" The middle-aged man asked with a smile.
Xiao Zhang was stunned and looked up at the stranger: "Yes, I'm thinking about what kind of eggs to buy." Are you...? "
"Oh, I'm Dr. Lee, and I work in the nearby nutrition department." The middle-aged man introduced himself with a smile, "Seeing that you are so entangled, why don't we talk about the nutritional knowledge of eggs?" "
Xiao Zhang's eyes lit up: "Great! Dr. Li, can you tell me which of these red shell eggs is more nutritious? "
Dr. Li shook his head lightly and smiled, "That's an interesting question. Let's find a place to sit down and talk. "
The two came to the rest area of the supermarket, and Dr. Li began to tell the story: "Actually, the shell color of eggs is not directly related to the nutritional content. The nutritional value of eggs depends mainly on the breed of the hen, feed and living environment, rather than the color of the eggshell. "
Xiao Zhang's mouth opened wide in surprise: "Really? So why are there so many colors of eggs on the market? "
Dr. Lee explains with a smile, "The color of the eggshell is determined by the hen's genes. Generally speaking, chickens with white earlobes lay white eggs, and chickens with red earlobes lay brown eggs. It's like human skin color, which is genetically determined and has nothing to do with nutrition. "
Xiao Zhang suddenly realized: "I see! So what we usually hear about is that native eggs are more nutritious, is it also a misunderstanding? "
Dr. Li nodded, "You're right. Many people think that native eggs are more nutritious, mainly because the living environment of native chickens is more natural and the diet is more diverse. But now many farms are mimicking this environment, so we can't judge the nutritional value based on the color of the eggshell alone. "
Xiao Zhang nodded thoughtfully: "Then how should we choose nutritious eggs?" "
Dr. Li said with a smile, "We have to look at several aspects when choosing eggs. First freshness. Fresh egg whites are cloudy, the yolks are plump, and they don't fall apart when standing on a flat surface. Second, look at the eggshell. The surface of a good egg shell is clean, intact and free of cracks. Third, smell it. Fresh eggs have no odor. "
Xiao Zhang listened attentively and nodded from time to time. Suddenly, he thought of something: "Dr. Li, I heard that some people eat raw eggs, is it true that they say that this is the most nutritious?" "
Dr. Li shook his head and looked serious: "This statement is not true. Raw eggs do contain some heat-sensitive nutrients, but they also carry the risk of harmful microorganisms such as salmonella. Moreover, the protein utilization rate in raw eggs is lower than that of cooked eggs. "
Xiao Zhang suddenly realized: "That hard-boiled eggs are more nutritious?" "
Dr. Li nodded, "That's right. Hard-boiled eggs are not only safe, but they also have a higher utilization rate of protein. However, boiled eggs are also particular. If you cook for too long, a green ring will appear around the yolk, which is due to the combination of iron and sulfide to form iron sulfide, which is harmless but can affect the absorption of some nutrients. "
Xiao Zhang asked curiously, "What is the best time to boil eggs?" "
Dr. Lee laughs, "Generally speaking, boiling water for 6-7 minutes is fine. In this way, the boiled eggs have just coagulated egg whites, semi-liquid yolks, good taste and nutrition, and are relatively intact. "
Xiao Zhang nodded again and again and asked, "Doctor Li, what are the nutritional values of eggs?" "
Dr. Li's eyes lit up as if he had found a soulmate: "When it comes to the nutritional value of eggs, there is really no end to it!" Eggs are known as 'whole foods' and contain almost all the nutrients that the body needs. "
"Eggs are rich in high-quality protein and have an amino acid composition that is close to the ideal pattern that the human body needs. It is also rich in vitamins A, B2, D, E, as well as minerals such as iron, zinc, calcium, phosphorus, etc. In particular, egg yolk is rich in lecithin, which is of great help for brain development and memory improvement. "
Xiao Zhang was fascinated by what he heard and couldn't help but sigh: "I didn't expect that the little egg would have so many benefits!" "
Dr. Li smiled and nodded, "Yes, eggs are really amazing food. However, not everyone is suitable to eat more eggs. For example, some people are allergic to eggs, and some people need to control their egg intake if they have high cholesterol. "
Xiao Zhang said thoughtfully: "Then how many eggs should ordinary people eat a day?" "
Dr. Lee replied, "For healthy adults, eating 1-2 eggs a day is more appropriate. However, if you usually eat more other animal foods, then the amount of eggs can be appropriately reduced. "
Xiao Zhang suddenly realized: "So that's the case!" Dr. Lee, can you share with us some tips on how to eat eggs? "
Dr. Lee smiled and said, "Of course." For example, eggs are best not eaten on an empty stomach, but can be paired with some vegetables or whole grains, which is more conducive to the absorption of nutrients. It is also best not to eat eggs with foods that contain tannins, such as strong tea, because tannins can affect iron absorption. "
"Adding a little vinegar to boiling eggs not only prevents the shells from cracking, but also makes them easier to peel. If you like soft-boiled eggs, you can put the eggs in cold water first, turn off the heat and simmer for 5-6 minutes immediately after the water boils. "
Xiao Zhang nodded again and again, as if opening the door to a new world: "Wow, I didn't expect there to be so many ways to eat an egg!" Dr. Lee, you are amazing! "
Dr. Li smiled and waved his hand: "These are just some small tricks. The most important thing is to eat a balanced diet and not be picky. Although eggs are good, you can't just eat eggs. "
Xiao Zhang suddenly realized: "I understand." It seems that when I buy eggs in the future, I don't have to worry about the color, the important thing is to look at the freshness and quality. "
Dr. Li nodded: "That's right, it's good that you can have such an understanding. Remember not to be fooled by superficial appearances and to take a scientific approach to food and nutrition. "
Xiao Zhang stood up and said gratefully, "Dr. Li, thank you very much for today's science popularization!" I learned a lot. "
Dr. Li smiled and said, "You're welcome, I'm glad I can help you." I hope you can share this knowledge with the people around you, so that more people can understand the correct nutrition knowledge. "
Xiao Zhang nodded solemnly: "I will definitely do it!" "
Walking out of the supermarket, Xiao Zhang's shopping cart contained a box of white-shell eggs and a box of red-shell eggs. He looked at the two cartons of eggs, and the corners of his mouth unconsciously rose. He knew that today he had not only bought eggs, but also gained valuable knowledge.
From now on, whenever he saw eggs, he would think of that amiable Dr. Li and that wonderful conversation about eggs. He was secretly determined to spread this knowledge to more people.
Xiao Zhang took a deep breath and felt the pleasure of knowledge. He knew this was just the beginning of his exploration of the world of nutrition. There is still more knowledge waiting for him to discover and learn in the future.
And it all starts with a simple choice – red-shell eggs or white-shell eggs?
In life, we often encounter such seemingly simple but confusing choices. But as long as we stay curious and have the courage to explore, we will definitely find the answer. Like Dr. Li whom Xiao Zhang met, the spark of knowledge can be ignited at any time and anywhere.
So the next time you're standing in the egg section of a supermarket and facing eggs of all colors, think about this story. Remember, it's not the color of the surface that matters, it's the quality of the inside. This applies not only to the choice of eggs, but also to all aspects of life.
Let's continue our journey of life exploration with this realization!
[This content is a story-based medical and health science article, and any name, place name, or event that appears in the article except for the health science content is artistic processing, and it is not intended to offend or belittle any individual, group or organization. If there is any similarity, it is purely a coincidence, please read it rationally. 】