What changes will your body experience if you drink coffee for a long time?

In a busy life, coffee accompanies countless people to start a new day and has become an indispensable part of many people's daily life. Have you ever thought about what kind of "chain reaction" will be triggered after drinking a cup of coffee?

What happens to coffee in the body?

When you take a sip of coffee, the caffeine in it can quickly break through the blood-brain barrier and enter the brain. Within about 45 minutes, the body absorbs all the caffeine, and then between 15 minutes and 2 hours, the caffeine concentration in the blood reaches its peak. At this time, do you feel refreshed and no longer sleepy?

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But everyone's metabolism of caffeine is like a unique "marathon", and genetic factors largely determine the speed. If you have a smoking habit or take oral contraceptives, you should pay attention, which will slow down the metabolism of caffeine in the body.

A moderate amount of coffee is indeed a "refreshing tool"

Just like the great writer Balzac, it is said that he only slept for 5 hours a day, relying on coffee to "keep alive", either in the cafe or on the way to the cafe. But if you lack sleep for a long time, your brain has "frozen", and drinking coffee at this time is just a drop in the bucket, and sleepiness will still cling to you.

Moreover, if you drink too much or are sensitive to caffeine, you may become anxious, or even have symptoms such as accelerated heartbeat, nausea, and dizziness, just like being drunk. Therefore, if your body has these reactions after drinking coffee, you have to reduce your intake appropriately.

Some people who drink coffee regularly will find that the effect of coffee seems to be getting worse and worse. This is actually a "tolerance reaction" in the body. When you decide to say goodbye to coffee, your body will also be a little irritated. In the first 1 to 2 days, symptoms such as headaches, fatigue, and depression may come to you, and your brain may become less sensitive. But don't worry, this withdrawal reaction will generally disappear slowly in 2 to 9 days. If you want to alleviate these discomforts, you can try to reduce the amount of caffeine a little bit to let your body adapt slowly.

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What changes will occur in the body if you drink coffee for a long time?

Coffee also causes some other interesting phenomena in the body. It stimulates the secretion of gastric acid, which makes you feel hungry quickly, and speeds up the peristalsis of the small intestine, which speeds up digestion. If you drink pure coffee without sugar or cream, you may even lose weight if you stick to it for a long time. In addition, about 29% of people find that coffee has a laxative effect.

However, expectant mothers should be careful. Because coffee can cross the placenta, drinking too much may increase the risk of miscarriage and the baby may be overweight. Therefore, pregnant women can only drink 2 cups of coffee a day at most, and it is better not to drink it. For the health of the baby, bear with it for now.

In terms of diseases, some people have always said that drinking coffee can cause high blood pressure, heart disease, and even shorten one's life, but there is actually no solid evidence to support these claims. On the contrary, drinking coffee in moderation (3 to 5 cups a day) can reduce the risk of cardiovascular disease. Coffee is also "innocent" in terms of tumor incidence and mortality, and has no correlation with it.

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How much coffee is appropriate?

The daily caffeine intake of American teenagers aged 15 to 19 is about 61 mg, which is about the amount of a bag of instant coffee; the daily caffeine intake of middle-aged people aged 35 to 49 is 188 mg, which is equivalent to 284 ml of freshly brewed coffee. The intake of Chinese people is similar, and many people get caffeine from tea and other beverages.

The U.S. Food and Drug Administration (FDA) recommends that healthy adults consume 300 to 400 mg of caffeine per day, which is about the amount in 10 cans of cola or a super-large cup of freshly brewed coffee. If you exceed 1.2 grams of caffeine, you may experience symptoms such as anxiety and restlessness. If you consume 8.8 to 14 grams, it will be very dangerous and may even be fatal. But don't worry too much, because it is difficult to reach such a high amount by drinking coffee or tea. This usually happens when taking caffeinated medicines.

So, from a health perspective alone, we can drink coffee with confidence, but we must remember the principle of moderation.