In recent years, milk tea has become increasingly popular, and various internet famous milk teas seem to have become the "longevity and happiness water" for more and more young people. However, what many people don't know is that although milk tea is delicious, its caffeine content may be higher than coffee, and drinking it may lead to insomnia. How much caffeine does milk tea contain? How much caffeine is in a cup of milk tea? Someone may have seen this statement online: the caffeine in a cup of milk tea is equivalent to 7 cans of Red Bull; The caffeine content of one cup of milk tea is equal to four cups of coffee; If you drink the cup of milk tea with the highest caffeine content, it's equivalent to drinking 4 cups of coffee or 8 cans of Red Bull. First of all, the conclusion is that the above statement is basically correct, and the caffeine content in milk tea is indeed higher than that in coffee. Why is there caffeine in milk tea? This is because milk tea is made from "milk+tea", and tea contains caffeine. The caffeine content in each gram of tea is generally around 20mg, with some reaching up to 40mg. When brewing tea, caffeine is easily dissolved from the tea leaves into the water. It is worth noting that many commercially available milk teas use concentrated tea powder directly, so the caffeine content is usually higher. According to the results of the "Assessment of Dietary Caffeine Intake Levels and Risks among Chinese Residents", in China, for adult consumers, the highest contribution rates of caffeine intake are tea, tea beverages, milk tea, and coffee; The highest contribution rates of caffeine intake among minors are, in order, milk tea, tea beverages, tea leaves, and chocolate. That is to say, whether adults or children, when drinking milk tea, they should pay attention to the intake of caffeine and never think that there is no caffeine in it. Why do some people wake up until dawn after a cup of milk tea? Many people say that drinking a cup of milk tea can cause insomnia, poor sleep, and even waking up until dawn. This is because caffeine has a central nervous system excitatory effect, and many people feel very excited after drinking it, unable to sleep. Some people who are sensitive to caffeine may even be unable to sleep all night after drinking a cup of milk tea. However, the energizing and stimulating effects of caffeine vary greatly among different individuals. Because there are some genes in our body, such as CYP1A2, PDSS2, etc., that control the metabolism of caffeine. People with more active genes metabolize caffeine at a faster rate, and the ingested caffeine is quickly eliminated from the body. Therefore, drinking a few cups of milk tea does not affect sleep at all, and even whether or not one feels sleepy after drinking milk tea. But some people's coffee metabolism genes are relatively weak, and even a little caffeine needs to be metabolized for a long time. Even the coffee I drank in the morning would bounce around in my mind at night, and I would wake up with just a cup of milk tea until dawn. Is caffeine in milk tea safe? What everyone is most concerned about is whether the caffeine in milk tea is safe and whether it will pose a threat to the human body. According to the "Assessment of Dietary Caffeine Intake Levels and Risks among Chinese Residents", it is safe for adults to drink a maximum of 1524g of liquid milk tea per day and not consume other caffeinated foods. Special reminder: Adolescents and pregnant women are more sensitive to caffeine and are generally not encouraged to consume it. So, if you are a teenager or someone who is pregnant or breastfeeding, try not to drink it. Can you drink milk tea with peace of mind? The biggest health problem with milk tea is that it contains too much sugar and fat. Many delicious milk teas add a lot of cream, and fat is definitely essential. The fat content in a cup of milk tea can usually be as high as 40-70 grams, and the sugar content in a cup of pearl milk tea is between 30-60 grams. Everyone must pay attention to controlling the amount of milk tea they drink, otherwise they will only get fatter and fatter