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This is the most intuitive feeling of many people-drinking coffee will make you less sleepy, refresh your mind and improve the efficiency of work and life. So many office workers and exam students like to drink coffee.
Caffeine does have a certain refreshing effect. When the human body is tired, it will release a signal substance called adenosine, telling the brain "I am tired". The more tired you are, the more this substance will be.
But if you want to let the brain know "I'm tired", you have to dock this substance with a specific receptor in the brain, and caffeine in coffee can also bind to this receptor, blocking the messenger, which is equivalent to blocking the normal combination of other receptors. In this way, the brain can't know the signals transmitted by fatigue substances, so it won't feel tired. Carrying it for 4-6 hours is not a big problem, and it can also play a "refreshing" effect.
Coffee can reduce the risk of some cancers.
Some people worry that "there is acrylamide in coffee, which may cause cancer". In fact, the International Agency for Research on Cancer (IARC) and the International Fund for Research on Cancer (WRCF) believe that there is not enough evidence to show that drinking coffee will increase the risk of cancer in humans.
In addition, there is some evidence that coffee can reduce the risk of certain cancers, such as breast cancer, endometrial cancer and liver cancer.
Reduce the risk of diabetes.
Drinking black coffee can also reduce the risk of diabetes. "Food and Health-Scientific Evidence * * * Knowledge" points out that moderate drinking of coffee (about 3-4 cups a day) may reduce the risk of type 2 diabetes.
International Diabetes Federation, American Diabetes Association and other institutions believe that diabetics can drink black coffee in moderation, and black coffee can be used as part of a healthy diet.
In addition, many studies have found that drinking coffee may also be related to reducing the risk of chronic diseases such as cardiovascular disease, gallstones, liver disease, depression and suicide. However, the results of these studies are still preliminary and need further verification.
Don't worry, at present, the scientific community still generally believes that coffee does more good than harm to health.
Author | Ruan, Director of Science and Technology Department of Kexin Food and Nutrition Information Exchange Center
Audit | Researcher of han hongwei National Food Safety Risk Assessment Center
Source | Star Project