How Much Caffeine Can Cause Anxiety?

Coffee, milk tea, energy drinks... These caffeine-rich drinks are loved by many people. However, Liu Qingchun, the former chief nutritionist of the PLA General Hospital, reminded that this kind of food has hidden health risks for some people.

The main reason why caffeine is fascinating is that it can stimulate the central nervous system and reduce fatigue. Liu Qingchun introduced that consuming caffeine does not actually eliminate fatigue, but temporarily prevents fatigue signals from being transmitted to the brain in some way. When caffeine is metabolized, fatigue will come back. Moreover, when the body is in a state of excessive fatigue, continuing to drink coffee is no longer effective. Liu Qingchun emphasized that although studies have shown that caffeine has certain positive effects on health, large doses or long-term intake of caffeine will also bring certain health risks, such as caffeine addiction or nervousness, irritability, Anxiety, muscle twitching, insomnia and a series of physical and mental adverse reactions, as well as peptic ulcers, will cause short-term headaches and other symptoms during withdrawal or withdrawal.

The National Center for Food Safety Risk Assessment has determined that the safe intake of caffeine for healthy adults is 400 mg per day, and the safe intake of caffeine for minors under the age of 18 is 2.5 mg per kilogram of body weight. Therefore, when consuming caffeinated food or beverages, pay attention to the caffeine content marked on the product to avoid dependence. In addition to coffee, milk tea, and energy drinks, caffeine is also naturally present in a variety of foods and beverages, such as tea and functional beverages, chocolate and chocolate products, cola, etc.; some prescription and non-prescription drugs, such as cold medicine, weight loss drugs Drugs, diuretics and stimulants may also contain caffeine. A recent survey on the consumption of coffee beverages conducted found that the caffeine content of each cup (large cup) of coffee in freshly made and sold coffee beverages is about 106-333 mg, of which the average American-style coffee contains 213 mg per cup. mg, latte 161 mg, mocha 195 mg. The caffeine content of tea is relatively low. According to a survey, a cup of 235ml black tea (medium strength) contains an average of 47mg of caffeine, and a cup of green tea is 20~45mg. A 330ml can of cola contains 34mg of caffeine, 100g of dark chocolate (85% cocoa content) contains 195mg of caffeine (the higher the cocoa content, the more caffeine), a 250ml can of Red Bull contains 50mg of coffee, Therefore, a bag of instant coffee also contains 50 mg, and a large cup of milk tea can reach up to 350 mg.

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Although consuming caffeine within a safe limit is harmless to the human body, some special groups of people should try to stay away from it. First, pregnant women and lactating women should avoid or minimize caffeine intake, and not exceed 200 mg a day, so as not to affect the development of fetuses or infants. The second is middle-aged and elderly women with a low-calcium diet or low calcium because a large intake of caffeine will accelerate the loss of calcium in the bones and increase the risk of fractures. The third is adolescents and children, so as not to affect sleep and growth, and development. Fourth, people with poor stomachs, insomnia, and people who are more sensitive to caffeine, so as not to cause discomfort.

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