Drinking too much coffee will kill you! Not only does coffee contain caffeine, but many functional drinks also contain a lot of caffeine. When the human body ingests too much caffeine in a short time, it will be fatal. For example, a 6-year-old boy named Davis Cripe (pictured below) in the United States died suddenly after drinking a bottle of cola, a cup of coffee and an energy drink continuously at the end of April this year. Later, the autopsy report concluded that caffeine overdose caused death.

When taking too much caffeine, the heart will be abnormal, such as arrhythmia and other symptoms, which will lead to sudden death in extreme cases. How many doses of caffeine can be life-threatening? Does everyone have the same dose limit? Or are some people particularly sensitive to caffeine? What if you take too much caffeine?

Generally speaking, it is not recommended for healthy adults to drink more than two cups of coffee in a short time, which can reach three milligrams of caffeine per kilogram of body weight, but it is recommended not to drink more than four cups of coffee all day (each cup contains about 65,438+000 milligrams of caffeine and 400 milligrams of caffeine). For pregnant women or mothers who need breastfeeding, it is recommended to halve the amount of healthy adults mentioned above, and it is best not to consume more than 200 mg of caffeine a day. It is recommended that children always keep caffeine within 3 mg per kilogram of body weight.

However, the above amount is only a long-term health risk assessment of caffeine intake by the German Federal Institute for Risk Assessment (BfR), and it is not fatal to consume more than this amount of caffeine in a short time. According to the research of American Food and Drug Administration (FDA), the lethal concentration of caffeine in human body is 0/70 mg of caffeine per kilogram of body weight/kloc.

However, this dose is not suitable for everyone. Some people are particularly sensitive to caffeine, and the lethal dose is far less than 0/70 mg of caffeine per kilogram of body weight/kloc-,which is related to age, metabolic ability and heart ability. In fact, considering that many people are sensitive to caffeine, many people simply don't know that their hearts are fragile in the face of caffeine. The lethal standard of caffeine per kilogram of body weight 170 mg stipulated by FDA is a high safety margin, taking all the above high-risk groups into account, so it is far below the caffeine intake limit of a normal healthy adult.

Of course, this does not mean that healthy adults can consume a lot of caffeine unscrupulously. Many times, it is also a very risky thing for healthy people. For example, drinking caffeine at the same time, the refreshing effect of caffeine will make people misjudge the degree of drunkenness, which is very easy to make people mistakenly think that they are not drunk and drink too much; For example, take a lot of caffeine before or during exercise, because exercise itself will put a burden on the heart. If you take a lot of caffeine before or during strenuous exercise, it will undoubtedly further increase the burden on your heart and increase the risk of heart attack.

How to judge whether you have taken too much caffeine? If your heart rate exceeds 140 for a long time after taking caffeine, it is probably caffeine overdose. At this time, you should see a doctor at once. If there is no condition to see a doctor, or there is still a distance from the hospital, you can dilute the caffeine concentration in your body by drinking more water, so that caffeine can be excreted with urine more quickly.