Beware of two misunderstandings about coffee drinking

When it comes to caffeine, there are two misunderstandings. One is to only know that caffeine has a refreshing effect, and drinking more will affect people's sleep. In fact, caffeine is a natural substance found in nature, which can be found in many plants, such as coffee beans, cocoa beans and tea. The second misunderstanding is that many people often think that caffeine causes osteoporosis.

In fact, the proper consumption of some caffeinated drinks can refresh the mind and refresh the spirit, the key is how to drink scientifically. In daily drinks, caffeinated drinks are mainly coffee, tea, cola and so on. It is generally believed that the safe daily intake of caffeine for adults is 300 milligrams in 240 milliliters per cup, 65 to 120 milligrams per cup of coffee, 20 to 90 milligrams per cup of tea and 23 to 31 milligrams per cup of Coke. So the average person who drinks 2 to 3 cups of coffee or 5 to 6 cans of caffeinated cola a day will not cause health problems caused by caffeine.

Of course, like many other nutrients, the control of caffeine intake is also very important. Consuming a large amount of caffeine for a long time can lead to the habituation of caffeine in the body. once you don't take it, you will have symptoms such as lethargy, fatigue and weakness. Too much caffeine can also lead to caffeine poisoning. The symptoms are irritability, nervousness, irritation, insomnia, blushing, polyuria and gastrointestinal discomfort. The safe daily intake of caffeine for adults is 300 mg. More than 300 mg is prone to these toxic symptoms, while an intake of 192 mg / body weight (kg) can kill half of adults.

Experts suggest that it is best to decide whether to drink more or less based on the effects of caffeine on sleep, blood pressure and digestive system, while lactating women and pregnant women should consume less caffeine.