咖啡因的好處 Benefits of Caffeine


Do you also have to have a cup of coffee every morning? In addition to refreshing, more and more studies have confirmed the value of coffee to health, and the right amount of "caffeine" brings many benefits to the human body!



Caffeine is a plant alkaloid and a central nervous system stimulant, mostly found in coffee beans, cocoa beans and tea leaves. Caffeine is both water-soluble and fat-soluble. When the human body drinks coffee, it will be absorbed into the blood and penetrate the cell membrane into the brain.


  • 咖啡因能刺激人的中樞神經,使人更加清醒、減少疲勞並提高集中力。
  • 咖啡因有助於燃燒脂肪,咖啡因能提升3~11%的新陳代謝率,若在運動前喝黑咖啡,可讓燃脂的效果倍增。
  • 咖啡因降低自體免疫疾病的發作頻率,美國密西根大學風濕免疫學科的研究團隊發現咖啡因可以降低自體免疫疾病的發炎反應,只要一杯咖啡的咖啡因含量,就足以抑制發炎反應的訊號傳遞路徑,也就是減少發炎反應上游基因的表現量,繼而減少發炎相關細胞因子的製造,一旦沒有這些細胞因子,就不會發生發炎反應。
  • Caffeine can stimulate the central nervous system, make people more awake, reduce fatigue and improve concentration.
  • Caffeine helps to burn fat. Caffeine can increase the metabolic rate by 3-11%. If you drink black coffee before exercise, the effect of fat burning can be doubled.
  • Caffeine reduces the frequency of autoimmune diseases. A research team from the Department of Rheumatology and Immunology at the University of Michigan found that caffeine can reduce the inflammatory response of autoimmune diseases. The caffeine content of a cup of coffee is sufficient to inhibit the path of signal transmission of inflammatory response, to reduce the expression of genes upstream of the inflammatory response, and then reduce the production of inflammation-related cytokines. Once these cytokines are absent, the inflammatory response will not occur.





          Excerpt from Kang Jian




  • 咖啡因能減少疼痛感,科學家發現咖啡因(茶、可可、可樂等飲料裡也有)的成分和人體中一種傳遞疼痛訊息的化學物質相似,所以當我們攝取了咖啡因,它會取代這種化學物質的角色,使細胞接收不到傳來的疼痛訊號,因此能減少疼痛感。所以,許多常見的止痛藥,如阿斯匹靈、麥角胺(ergotamin)等,多少會加入一些咖啡因來加強效果。不過,咖啡的止痛作用不是在每個人身上都見效。
  • Caffeine can reduce pain. Scientists have found that caffeine (also found in tea, cocoa, cola and other beverages) is similar to a chemical substance in the human body that transmits pain messages, so when we take caffeine, it will replace the role of this chemical substances, which prevents cells from receiving incoming pain signals, thus reducing pain. Therefore, many common painkillers, such as aspirin, ergotamine, etc., will add some caffeine to enhance the effect. However, the analgesic effect of coffee is not effective for everyone.




          Excerpt from Kang Jian




Caffeine has both advantages and disadvantages, such as growing teenagers and children are not suitable for drinking, pregnant women drinking coffee will affect the fetus and so on. When the doctor has special instructions not to recommend drinking coffee, please cooperate to be good for your health.



How much caffeine is in a cup of coffee?



Arabica coffee beans contain about 12 mg of caffeine per gram (1 gram = 1000 mg). Coffee soluble matter (including caffeine) accounts for 30%, and a good brewing extraction rate is 20%, which is 2/3 soluble substance can be extracted. It means 8 mg of caffeine per gram of coffee beans can be extracted. If 20g of 300cc coffee is brewed, there will be about 160 mg of caffeine in each cup of Arabica coffee.

│延伸閱讀 :一杯咖啡因有多少

Extended reading: How much caffeine is a cup of coffee



Drinking black coffee has many positive effects, but don’t binge drink coffee just because you hear its benefits, especially for those who don’t usually drink coffee, it is recommended to consult a doctor about whether and how much they can drink. In addition, a healthy lifestyle requires a balanced diet, eating more fruits and vegetables, and developing the habit of exercising to be healthy and long-lasting. The extra effect of drinking coffee can be used as a joint bonus for drinking coffee as usual~