13 effects of caffeine on ordinary people that you need to know the truth about!

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People usually choose to drink coffee, tea and energy drinks to refresh themselves, which is actually taking a certain amount of caffeine. But what exactly happens to the human brain and body when taking this colorless and tasteless ingredient?

1. Most healthy adults can consume up to 400 mg of caffeine per day, which is equivalent to five 4-ounce cans of Red Bull.

2. When ingested, the stomach absorbs caffeine first, and then it enters the blood circulation after 1 to 2 hours; it takes 5 to 6 hours to consume 1/2 of the ingested caffeine;

3. Caffeine can improve memory to some extent, but it is more effective in non-addicted people;

4. A moderate amount of caffeine can help you concentrate, but too much caffeine can cause irritability, which is counterproductive.

5. Caffeine inhibits adenosine in the brain, making people feel refreshed. By inhibiting adenosine, it promotes the secretion of dopamine and glutamine, thereby increasing alertness and reducing the risk of depression.

6. Some studies have shown that caffeine can reduce appetite immediately. However, most studies on the effect of caffeine on appetite show that the effect lasts too short or is only effective on certain animals. Therefore, there is no conclusive evidence that drinking coffee regularly can help lose weight.

7. A moderate amount of caffeine will immediately increase blood pressure, but it will not cause harm to the human body;

8. Caffeine increases the acidity of stomach acid and may also cause heartburn symptoms (i.e. gastroesophageal reflux symptoms);

9. Excessive consumption of caffeine will cause a surge in adrenaline, leading to irritability and emotionality;

10. Caffeine helps speed up the onset of drug effects. Excedrin is no stranger to people who suffer from periodic migraines. However, many people don’t know that in addition to Acetaminophen and aspirin, it also contains caffeine. There is evidence that when caffeine is mixed with certain painkillers such as Acetaminophen and aspirin, it can work faster, prolong the duration of action, and enhance the efficacy of the drug.

11. Caffeine is the most commonly used stimulant in sports and the most commonly used psychoactive drug in the world because it can change the way humans feel and interact with the world around them.

12. Charles Czeisler, a neuroscientist at Harvard University, said: Caffeine combined with electric current can help humans escape the natural pattern of sleep and wakefulness and get rid of the solar cycle.

13. National Geographic commented on the impact of caffeine: "It can be said that it helped mankind achieve the transition from an agricultural society to an industrial society."

Appendix: Comparison of caffeine content of various beverages (in cups), from left to right:

First row: Brewed coffee, filter coffee, ready-to-drink coffee, espresso

Second row: black tea, green tea, white tea, decaffeinated coffee

Author: Jiang Jingjin Source: Luxe.Co

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