Let's get to know coffee and caffeine again.

Since childhood, many people in China have been nurtured in the fragrant and pleasant "tea culture". They always feel a little at odds with the bitter and rich Western-style "coffee culture". Even when many people mention coffee, they think of the disadvantages of "caffeine."drinking coffee leads to calcium loss, easy to suffer from osteoporosis," and so on, it is like facing an archenemy, making many people timid.

Ennis Doyli, one of the founders of the Coffee Science and Information Society, pointed out that in the past, people had many misunderstandings about coffee. In recent years, coffee has been regarded as a healthy drink. In fact, coffee contains not only caffeine. It is also rich in protein, fat, nicotinic acid, tannic acid, alkaloids, potassium, dietary fiber and other nutrients!

So what are the health benefits of coffee? Next, the editor of China Coffee Network will take a look at it with you:

Oncology nutrition experts believe that coffee helps prevent and fight cancer. The polyphenols in coffee are strong antioxidants. Drinking some coffee every day has a certain effect on both cancer prevention and cancer treatment. Of course, it is only an adjuvant treatment and should not be taken as a drug.

Some experts suggest that patients with hepatitis drink some coffee every day. The polyphenols rich in coffee also have a protective effect on the liver and are very beneficial to the repair of liver cells. Japanese experts have found that in addition to nourishing the liver, coffee can also relieve alcohol, which contains chlorogenic acid to avoid alcoholism.

Coffee can prevent type 2 diabetes to some extent. Many studies have shown that the incidence of type 2 diabetes is lower among coffee drinkers because the substances contained in coffee can reduce the absorption rate of glucose in the intestines and change the location of glucose absorption. Note that what we're talking about here is "to some extent", which doesn't mean you won't have diabetes if you drink coffee.

The gastroenterologist believes that coffee helps digestion. Caffeine stimulates the sympathetic nerve, stimulates the gastrointestinal tract to secrete gastric acid, and promotes gastrointestinal peristalsis. The doctor suggested that people who love meat had better have a cup of coffee after a meal. Coffee has a good effect on relieving grease and aiding digestion. In addition, the content of soluble dietary fiber in coffee is higher than that in orange juice, so drinking coffee has a certain effect on relieving constipation. Caffeine can also accelerate fat decomposition, speed up the body's metabolism, increase heat consumption, and help to lose weight.

Psychologists and cardiologists believe that coffee can prevent depression to some extent. People who drink coffee regularly every day will feel less excited, happy and irritable, their mood will be improved and their state of depression will be reduced. Experts point out that when you are irritable or depressed, a cup of coffee can help get your mood back to normal.

Caffeine can accelerate the free contraction of muscles, increase tendon strength, increase body sensitivity, and improve motor function. Coffee also helps relieve exercise fatigue, and research by exercise experts at the University of Georgia shows that drinking one or two cups of coffee after exercise can help relieve muscle soreness.

After reading the above introduction, do you think coffee is beneficial and harmless? In fact, coffee also has its drawbacks. After all, no matter how good things are, enough is enough.

Excessive caffeine can lead to hyperpalpitation (the heart beats violently), and even side effects such as trance, unstable walking center and so on. In the evening, nerve excitement caused by excessive coffee may lead to temporary difficulty in falling asleep or insomnia and dreaminess, and so on. Drinking too much coffee can also lead to calcium loss. In addition, diarrhea is best not to drink coffee, coffee diuretic effect, will increase the discharge of water in the body and aggravate the symptoms of diarrhea.