Is caffeine addictive? What about caffeine addiction? The disadvantages of caffeine

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How important it is that caffeine keeps us awake in a hectic order! The four drinks commonly consumed around the world: coffee, cocoa, cola and tea, all contain caffeine, and the largest source of this kind of food in the rapid increase in modern times comes from coffee beans. Caffeine does not provide any nutritional value. It's tasteless, and if it's in your food, you won't feel the amount you eat. However, it can affect your mood and cause physical side effects.

How much caffeine is there in a cup of coffee? It depends on how many grams of coffee powder, variety, extraction time, and water temperature. According to the book "New Coffee Science", the caffeine content per cup is measured in milligrams (mg), and the basic formula is as follows:

(caffeine as a percentage of bean weight X coffee powder several grams) X1000 = a cup of coffee contains several milligrams (mg) caffeine

The common Arabica caffeine content is about 1.1% ~ 1.5%, and the median value is 1.3%. Therefore, if you brew with 10 grams of coffee powder, the caffeine formula is (1.3% X 10) x1000=130mg. But this 130mg is the maximum. Caffeine will not be extracted and dissolved at 100%, and the actual data will be smaller than the calculated data.

American coffee is more caffeinated than a latte

Because caffeine dissolves in hot water, the way it is brewed will also affect the caffeine content. The longer the coffee powder is exposed to water, the more caffeine will be dissolved. Using the same coffee beans, the seemingly simple American filter coffee machine has the highest extraction dose, with a cup of hot American coffee (about 240c.c.) brewing for 5 to 7 minutes and dissolving caffeine of about 115,200 mg (mg).

If you use an espresso machine, the name looks thick, but the high-pressure steam filter takes about 20 to 30 seconds, so a cup of 40c.c. Espresso contains only 580185 mg (mg). In addition, the caffeine content of milk-containing coffee drinks varies according to the ratio of milk to espresso, which is also 360c.c. The latte, coffee to milk ratio is 1:2, which is only half as caffeinated as American coffee of the same size.

Health effects of excessive caffeine intake

In addition to coffee, the intake of caffeinated foods in daily life also includes tea drinks, cola drinks and chocolate foods made from cocoa beans.

Although scientific studies have shown that safe caffeine intake varies according to age, weight and health status, according to the EU Food Science expert Committee, the recommended daily caffeine intake is less than 300mg (mg), which is less harmful to health. Patients with cardiovascular disease, arrhythmia, gastrointestinal problems, long-term insomnia and pregnant women and children, it is best to avoid or reduce caffeinated drinks.

In 2007, the Consumer Protection Council and the Food and Drug Administration began to promote the "caffeine content red, yellow and green label" as a way to identify the caffeine content of freshly brewed coffee on the market, hoping to simply remind coffee lovers of the invisible amount of caffeine consumed, that is, green light (caffeine content below 100mg) coffee can only drink up to three cups a day.

If you suspect that you have too much caffeine, you can provide a daily diet list to see a doctor to evaluate the diagnosis, reduce your chances of intake in life, and reduce your dependence on caffeine.