Pharmacological effects
Coffee and tea are two popular drinks in many countries. To get ground coffee, people roasted the seeds of coffee cherries and grinded, today there are types that are processed into water-soluble flour. During roasting, some of the water evaporates (about 18%), the sugars in the caramelized beans turn dark coffee beans into dark browns, and there is a chemical change that makes the coffee taste great. special, easy to seduce.
The euphoric effect of coffee is due to containing compounds whose basic ingredient is caffeine, with a content of 0.7-2%, less than tea (tea) at 2-3%. However, a cup of coffee has a stronger stimulating effect because using up to 10-15g of coffee powder contains about 100mg of caffeine, while a teapot has less caffeine. Caffeine stimulates the central nervous system, makes people awake, stimulates their ability to work, especially working with the mind, enhances muscle activity and coordination of activities.
The soothing effect of caffeine is widely used: in addition to tea, coffee is a popular drink, many other soft drinks such as carbonated soft drinks, energy drinks contain caffeine. Caffeine is also used as a medicine, a component of many cold and pain medications, to enhance the analgesic effects of paracetamol, aspirin or reduce the drowsiness effect of antihistamines to treat allergies.
Coffee is also considered to have nutritional value, with 12% lipid (fat), 12% protit (protein), 4% minerals - the most is potassium and magnesium. Mixed with sugar and milk, the nutritional value of coffee is increased.
Coffee: drink properly
Caffeine has effects on the central nervous system and also the operation of the cardiovascular system. Therefore, in some people, drinking coffee will make the heart beat faster, headache, tremor, feeling insecure. So people with cardiovascular disorders should be careful, if they are affected, they should not drink anymore.
Caffeine has a diuretic effect, if taken at night, besides difficulty sleeping due to irritation, it is necessary to wake up to urinate at night. Therefore should drink coffee during the day, especially in the morning is best. Every day drinking a cup (about 200ml) is good, or 2-3 cups are divided in the afternoon.
- Caffeine has a stimulating effect that increases gastric acid secretion. So avoid drinking coffee on an empty stomach to protect the stomach lining, especially those who already have weak stomach. Drinking coffee in the morning on an empty stomach, not eating breakfast is also harmful to health. In order to suit the tastes and health status of many people, the market has had coffee to remove or remove all caffeine.
- Depending on each individual, the way to drink coffee is different. Some people like to drink unsweetened black coffee to enjoy the bitter, special taste of it. Some people like to drink coffee with milk. Any way is fine, as long as it suits your condition, like a person with diabetes who is only good for coffee, but those who are in need of energy should drink coffee with sugar or milk.
- Caffeine may interact with some medications, such as the sedative effects of sedatives. Some fluoroquinolones (such as ofloxacin) taken with coffee will increase the stimulating effects of caffeine (causing heart palpitations, irritability, and tiredness, which some people mistakenly think about poisoning). Therefore, avoid drinking coffee with medicines (it is best to use cool boiled water to cool).
- Coffee attracts drinkers not only because of the effects of caffeine but also by the taste. Therefore, substances and aromas have been added during coffee processing to create a bitter taste, special flavor of coffee for easy sale. If someone drinks coffee and then gets drunk or red, they may be allergic to caffeine or a substance in coffee. It is best to change the type of coffee, if you drink any type of thing, you should not drink coffee anymore.
- For students, do not abuse coffee (including dark tea) for staying up all night. Do not organize study, reasonable rest, so some young people close to the test day to learn cumulative, compressed and thanks to very strong coffee to awake "rice" all. It should be noted, fatigue and drowsiness are signs that the body needs rest. Using coffee to open eyes is a trick, in fact the body is still tired. Drinking coffee to stay up all night is bad for health, especially harmful to the brain.
