What are the advantages or disadvantages of coffee for us? Which brand of instant coffee tastes good?

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The advantages and disadvantages of drinking coffee

People often talk about coffee enthusiastically, some people like it very much, while others are skeptical about it. Is the effect of coffee good or bad? We will sort out the reliable information as follows for your reference and self-judgment.

Caffeine is caffeine, and they are exactly the same compound. Because of the conventional language, the term caffeine still exists today, and many people still think that it is two different substances.

Coffee is good for urine and promotes defecation.

Caffeine takes only about five minutes to reach the brain and take effect. The half-life of caffeine (the time it takes the body to metabolize half its intake) ranges from three to five hours, after which the effect of caffeine is halved.

Caffeine stimulates acid secretion in the stomach and helps digestion.

Drink the right amount of coffee!

Is coffee a medicine? The answer is no. But people who are used to drinking a lot of coffee (consuming more than 400 milligrams of caffeine a day) suddenly stop drinking coffee, causing nerve irritation symptoms such as headaches and temporary fatigue, which last for three to five days.

Caffeine is said to help prevent certain diseases, such as slowing the symptoms of Parkinson's disease or improving memory degradation caused by Alzheimer's disease. The polyphenols in coffee not only have antioxidant function, but also reduce the risk of developing type 2 diabetes. More than 60 studies have shown that coffee helps prevent specific cancers, including bladder cancer, oral cancer, colon cancer, esophageal cancer, uterine cancer, brain cancer, skin cancer, liver cancer and breast cancer.

Coffee is exciting!

Caffeine is a central nervous system stimulant and the most widely used pick-me-up in the world. It has exhilarating and even stimulating effects. It makes people feel more sensitive, increases heart rate, improves cognitive function, reduces fatigue and slows down physiological responses.

Drinking too much coffee (more than 400 milligrams of caffeine a day) or drinking coffee near bedtime can cause difficulty falling asleep and even insomnia. Too much caffeine can also cause palpitations and anxiety.

Generally speaking, drip coffee contains more caffeine than espresso: a single cup of espresso contains 47-75 mg, while a cup (mug) contains 75-200 mg of caffeine.

If the downside of coffee is that it yellowes teeth, the advantage is that the antibacterial properties of caffeine and polyphenols (phenols) make people less prone to tooth decay.

Caffeine helps convert fat into energy and enhances physical performance, especially physical persistence. For this reason, until 2004, the World Anti-Drug Organization listed caffeine as a banned ingredient before the competition.