1, eliminating fatigue and activating the brain.
2. Preventing cancer: reducing the risk of colorectal cancer and rectal cancer.
3, remove oral odor: it can eliminate garlic smell.
4, promote blood circulation: (for people with healthy hearts) can improve heart function and make blood vessels expand moderately.
5, rapid laxative: its laxative effect is only effective when drinking in the morning, and it is invalid at other times.
6, treatment of migraine: treatment of migraine, it is best to have a precursor to drink.
7, inhibit asthma: due to the stimulation of sympathetic nerve, can inhibit the excitement of parasympathetic nerve caused by asthma.
8. Lowering cholesterol: Caffeine can stimulate gallbladder contraction and reduce cholesterol that is easy to form gallstones in the gallbladder.
The harm of coffee:
1, heart
Caffeine acts on the heart in two ways: it not only affects the brain center that regulates the cardiovascular system, but also directly affects the heart. High dose of caffeine can increase the heart rate of people who are intolerant of caffeine 10~20 beats/min, and may cause transient arrhythmia in some people.
Therefore, moderate consumption of caffeinated beverages (up to 500 mg per day on average) will not greatly increase the risk of heart disease, but exceeding this dose may increase the risk of myocardial infarction.
2. Kidney
It is common for many people to fall in love with the toilet after drinking coffee in the morning. This is because caffeine affects adenosine receptors in the kidney and acts as a diuretic. Caffeine may also slow down the brain's release of an antidiuretic hormone, which reduces urine production.
3. Digestive system
The acidity, oil and caffeine in coffee may stimulate gastric mucosa and promote gastric acid secretion. Drinking caffeinated drinks for a long time can lead to stomach problems.
4. Respiratory system
Caffeine and similar drugs have two effects on breathing. One is to increase the breathing frequency. In addition, caffeine can relax the smooth muscle around the trachea, thus expanding the trachea and increasing the breathing ability. But caffeine can't be used as a drug to treat asthma in clinic.
5. Reproductive system
Studies have shown that babies born to women who drink coffee during pregnancy have lower birth weight. Studies have also shown that caffeine intake (equivalent to drinking more than one cup of coffee a day) may significantly reduce the chances of pregnancy in women.
6. Eyes
Caffeine will shrink (narrow) the microvessels of the eyes, thus reducing the nutrients entering the cells of the eyes, and also reducing the speed of removing wastes from the eyes.
Extended data:
Taboos for drinking coffee:
1, remember not to drink coffee with tea. Tannic acid in tea and coffee can reduce iron absorption by 75%. It is advisable to take warm boiled water.
2. Tannic acid in tea and coffee will reduce the absorption of calcium. Therefore, it is best to drink tea and coffee between meals.
3. Caffeine-containing drinks and foods can cause nausea, vomiting, headache, and rapid heartbeat after being drunk in large quantities by pregnant women. Caffeine can also enter the fetus through the placenta, affecting fetal development.
4. Many doctors believe that pregnant women drinking 1~2 cups (6~8 ounces each) of coffee, tea or carbonated drinks every day will not affect the fetus. But for the sake of caution, it is best for pregnant women to ban it. Caffeine can lead to an increase in abortion rate, so drink decaffeinated drinks.
Children should not drink coffee. Caffeine can excite children's central nervous system, interfere with children's memory and cause ADHD.
6. Strong tea, coffee and carbonated drinks are also risk factors for the formation of digestive tract ulcers; Therefore, patients with stomach problems should not drink more coffee.
7, coffee drinks contain caffeine, so it is easy to cause tinnitus.
People's Network-Coffee affects 6 parts of the body. 7 taboos for drinking coffee carefully.
People's Network-What are the functions of coffee? Five unknown life miracles.