A consultant asked me to verify that my colleagues said that her face is more yellow than before, and she also feels that her hands and skin are more yellow than before. Will this drink about 1 kg with her every day? Freshly squeezed carrot juice, and has been drinking for more than 1 month. I told her that it might be related, because carrots are rich in carotene, which can make the skin yellow, and suggested that she stop drinking carrot juice. She asked me if the yellow dye had any harm. I said no. After stopping drinking carrot juice for a while, the yellow dye could subside on its own. Her next words surprised me very much. She said, "Then I can stop drinking, can I continue to drink?"

　　 I was surprised because I didn’t expect anyone to be so obsessed with carrots that they had already dyed their skin yellow. I don’t want to stop, although according to the existing materials, yellowing of the skin caused by eating carotene-rich citrus fruits or carrots is generally harmless. After stopping eating these foods, the yellowing can subside, but do not stop eating. What will be the consequences of being yellowed all the time? Will it be harmless? I don’t know who can answer this question, and I also want to know what will happen to my skin when it stays yellow?

　　said Don’t know what we don’t understand, shouldn’t we be careful? I think she understands this, but why does she want to take the risk to continue to drink carrot juice? Because she believes carrot juice will bring huge benefits to her, and This benefit can hardly be replaced by other foods.

　　Carrot is indeed a very nutritious vegetable, especially rich in β-carotene. Beta-carotene has two basic functions in the human body. One is that it can be converted into vitamin A to play the role of vitamin A; the other is antioxidant, which is beneficial to delay aging and prevent chronic diseases.

　　In the past, because of low living standards, fish, meat, eggs, milk and other foods rich in vitamin A were eaten less. In order to obtain enough vitamin A, nutrition workers generally encourage eating Vegetables rich in beta-carotene, such as cheap carrots, have formed a deep-rooted "nutrition concept"-eat more carrots. Many mothers will persuade their children to eat carrots. Interestingly, most children are reluctant to eat carrots. In fact, people’s living standards are now high, and foods rich in vitamin A, such as fish, meat, eggs, and milk, are eaten more. Vitamin A does not necessarily have to be eaten with vegetables. Even if you eat vegetables, you don’t have to. Not carrots. In fact, many vegetables such as leeks, broccoli, tomatoes, pumpkins, etc. are rich in β-carotene, and eating these vegetables without eating carrots is actually the same in terms of obtaining β-carotene.

　　 β-carotene does have a good antioxidant effect, but there are many anti-oxidant ingredients in food, not only β-carotene, lycopene, vitamin C, vitamin E, Selenium, plant polyphenols, flavonoids... there are more than ten common species. They exist in different foods and play a common role-scavenging free radicals and anti-oxidation. Carrots also contain more dietary fiber and oligosaccharides, which are important for promoting bowel movements and maintaining intestinal health, but not only carrots contain them, most vegetables and most fruits contain these two ingredients, can play the same effect. This is why nutrition advocates that foods should be as diverse as possible and match each other.

　　In short, although carrots are good, sayings or practices such as "must eat carrots", "non-eating carrots", "best carrots" are not necessary nutrition dogma

　　We can ask Professor Wang Kean to introduce this question. He is the former president of the Chinese Academy of Preventive Medicine and a well-known epidemiologist in China. He once dealt with a report of ‘cases’ of concentrated skin yellowing in some schools in the southern region. At that time, many people did not know whether there was an unexplained epidemic infectious disease, or even isolated these students to the hospital for observation. Based on years of clinical epidemiological work experience, Professor Wang Kean asked the hospital to check the vitamin A in the blood of these students, and then conducted further epidemiological investigations. The conclusion was that too much β-carotene intake. The area where these students are located is relatively monotonous. Citrus and carrots have just been on the market. Everyone has little intake of other foods, but citrus and carrots are ingested in large quantities. This has caused this phenomenon. However, these students later had any physical appearance, and there was no further information as to whether they caused adverse effects. We will take this question to interview Professor Wang Kean to see if he can provide some further information.