Benefits

1. Coffee contains certain nutrients. Nicotinic acid in coffee contains vitamin B, and the content of roasted coffee beans is higher. And there are free fatty acids, caffeine, tannic acid and so on.

2. Coffee is good for the skin. Coffee can promote metabolic function, activate digestive organs, and has great effect on constipation. Taking a bath with coffee powder is a kind of thermotherapy, which has the effect of losing weight.

3. Coffee has a hangover relieving function. Drinking coffee after drinking will quickly oxidize acetaldehyde converted from alcohol, decompose it into water and carbon dioxide and excrete it.

4. Coffee can relieve fatigue. To eliminate fatigue, we must supplement nutrition, rest and sleep, and promote metabolic functions, and coffee has these functions.

5. Three cups of coffee a day can prevent gallstones. For caffeinated coffee, it can stimulate gallbladder contraction and reduce cholesterol that is easy to form gallstones in bile. Recently, researchers at Harvard University in the United States found that men who drink two or three cups of coffee a day have a lower chance of getting gallstones than 4%.

6. When you are nervous, adding caffeine will help improve your alertness, sensitivity, memory and concentration.

Disadvantages

1. Tannic acid in coffee will reduce calcium absorption. Therefore, it is best to choose between two meals when drinking tea and coffee.

2. Caffeine-containing drinks and foods will cause nausea, vomiting, headache, rapid heartbeat and other symptoms after being drunk in large quantities by pregnant women. Caffeine can also enter the fetus through the placenta, affecting fetal development.

3. Common coffee companions contain more milk, sugar and fat. Coffee itself may stimulate the secretion of gastric juice and promote food digestion and absorption. Not only can it not slim down, but it will also make people fat.