What is coffee? Why are we so attached to this drink and do not imagine how to wake up without coffee in the morning? What is the effect of coffee?
In one cup of coffee (8 oz/ 237 ml) the caffeine content is up to 165 mg. Caffeine is a psychoactive stimulant and it has a stimulating effect on the nervous system. Under the influence of caffeine, cardiac activity accelerates, blood pressure rises. Stimulating effect leads to an increase in mental and physical performance, reducing fatigue and drowsiness.
The effect of caffeine lasts for several hours. Then there is fatigue. The systematic use of caffeine in large doses (1000 mg per day and more) causes the depletion of nerve cells. Over time, there is dependence.
Can coffee have a beneficial effect on health and in what cases? Does the regular use of this drink cause harm and which one?
Negative Effects of Coffee
1. Coffee causes physical dependence.
To determine if you are addicted to caffeine or not, you should stop consuming coffee and other beverages containing caffeine for a while. If you have a dependency, you will see symptoms such as: headache, fatigue and drowsiness, irritability, nausea.
When you get used to the tonic effect of coffee gradually decreases and to achieve the former effect requires an increasing dose. The higher the dose, the stronger the dependence, the greater the harm of coffee and the harder it is to abandon it.
2. Harm of coffee for the nervous system.
With prolonged stimulation of the nervous system, the body is constantly in an excited state. The nervous system experiences prolonged systematic stress. This stress causes depletion of nerve cells and disrupts the normal functioning of all body systems.
3. Harm coffee for mental health.
The use of caffeine in large quantities can lead to the development of various psychoses, epilepsy, paranoia. Can cause unmotivated aggression.
4. Harm coffee for the heart.
Coffee enhances cardiac activity, excites the vasomotor center, increases the pulse. Caffeine has a short-term effect on blood pressure – leading to a slight increase in blood pressure. The above properties of coffee make it especially harmful for people with diseases of the cardiovascular system.
5. Coffee interferes with digestion and flushes important microelements from the body.
Caffeine flushes out some important trace elements and interferes with their assimilation. These are the following microelements: calcium, magnesium, potassium, vitamins B1 and B6.
6. Harm of coffee for children and pregnant women.
Drinking coffee during pregnancy increases the risk of fetal death in the womb (about 4 cups of coffee a day increase the risk to 33%) and damages the development of the fetus :
⦁ A child is often born with a low weight.
⦁ Teeth begin to be cut later than they should.
⦁ The growth of the child is lower than that of peers.
⦁ A child is born with a caffeine addiction.
The use of products containing caffeine (and this is not only coffee, but also chocolate, cocoa, etc.) causes great harm to children’s health. In addition, everything that was said about the dangers of coffee for adults is relevant for children . The only difference is that in order to harm the child’s body, a much smaller dose of caffeine is enough.
7. Harm of decaffeinated coffee.
There are several ways to remove caffeine from coffee beans (decaffeination):
A “traditional” method in which a methylene chloride solvent is used to remove caffeine (methylene chloride-dichloromethane, methylene chloride-a colorless liquid with a chloroform odor having a narcotic effect) or ethyl acetate (a colorless liquid with a fruiting odor). After the separation of caffeine, some of the solvent remains in the grains. The solvent may be harmful to health.
“Only the water” method of decaffeination uses no chemicals. This method is more expensive, but coffee is obtained without chemical additives, while maintaining its flavor and aromatic qualities.
Another method of decaffeination is the use of compressed gas (CO 2 carbon dioxide ). Carbon dioxide does not leave any traces in the beverage and breaks the flavor and aromatic qualities.
Thus, only the “traditional” decaffeination method adds harmful chemicals to the coffee. But it is worth keeping in mind that decaffeinated coffee still contains caffeine, although in smaller doses than regular coffee.
Health Benefits of Coffee
1. The use of coffee in the prevention of cancer.
Approximately two cups of coffee a day reduce the risk of cancer of the following types: liver cancer, pancreatic cancer, colon cancer, cancer of the rectum.
2. The use of coffee in the prevention of Parkinson’s disease.
Coffee reduces the risk of getting Parkinson’s disease. And, for women to prevent this disease, it is enough to drink coffee in moderate amounts, and men need large doses to achieve the same effect.
3. The use of coffee for the prevention of other diseases.
The results of some studies show that coffee reduces the risk of developing such diseases as: asthma, cholelithiasis, cirrhosis of the liver, heart attack, atherosclerosis, hypertension, hypercholesterolemia, migraine.
4. The use of coffee for the reproductive function of men.
This is not about improving potency, but only about improving the reproductive function of men – increases the mobility of spermatozoa.
5. Use of coffee for weight loss.
The stimulating effect of caffeine helps to lose weight. 1 cup of coffee makes aerobic exercise a third more effective than the usual for the “burning” of calories. With diets and sports, coffee makes the body use energy to produce energy, not carbohydrates, but fat.
6. Use of coffee for digestion.
Coffee and caffeinated drinks (for example, Coca-Cola) are often used for problems with digestion, stomach upset.
There is an opinion that coffee helps digest food, for which you need a cup of this drink after dinner. Truth, then the question arises – how to be with the mineral substances, the assimilation of which coffee is just getting in the way? Apparently, the help in digesting food is not to help the body absorb useful substances. It’s not entirely clear what is the use.
7. The benefits of coffee in medicine.
Here, of course, it’s not about the beverage itself, but about caffeine. In medicine, caffeine is used:
⦁ with diseases that depress the central nervous system (for example, when poisoning drugs and poisons)
⦁ with infectious diseases,
⦁ when the cardiovascular system is inadequate,
⦁ with spasms of blood vessels.
Caffeine is one of the components of some medicines. In this case, we are talking about the treatment of already existing diseases. These medicines have their own side effects.
In general, the use of caffeine in medicine can not be considered a useful property of coffee, as a drink for healthy people.