Many people in the world start their day with a cup of coffee even without thinking whether it is useful or not. They have just used to it and suppose it to be quite stimulating drink. It is really so and are there any dangers in drinking coffee we will find out after reading the article below.
Tea and coffee in contrast to vodka provide an opportunity to have a talk as equals though with considerably lower moral satisfaction. G. Ratner
1. Smooth laxative and diuretic.
3. Allows not falling asleep when it is needed.
1. The excessive use of coffee increases the risk of cardiac diseases.
2. It may increase the blood cholesterol level.
3. It may cause migraine in people with increased sensitivity.
4. The excessive use of it in women increases the possibility of osteoporosis development in future.
Coffee is rich of caffeine and other active materials and only one of them – nicotinic acid has the nutritive value. It is released within the coffee beans roasting. The cup of the coffee may contain about 1 mg of this vitamin. However you will have to drink 15 cups in order to get the daily norm of it for the adult person. Generally the nutritive value of the drink is defined by the quantity of the milk and sugar added.
Where does the coffee come from
The word “coffee” descends from the Arabian “gabwa” that means “stimulating”. Due to the legend the archangel Gabriel worried by the fact that the drowsiness may prevent Mohammed in achieving his aims gave him coffee. The Prophet unhorsed 40 knights and seized 40 women having drunk it.
Coffee and cholesterol
The researches have revealed that those who drink over 6 cups of the coffee per day experience the risk of cardiac diseases development. However the risk is more related to the method of the coffee making than to the caffeine contained. When the coffee is being made by espresso method with passing the steam through the coffee powder or by usual method with pouring of the water and boiling (this method is especially popular among Scandinavians) two chemical elements are being released and they increase the blood cholesterol level and consequently the risk of the cardiac diseases development. These elements are kofestrol and kofeol constantly appear in the coffee beans. However they disappear when the coffee is being filtered through the paper within the instant coffee production or making coffee in coffee-machines.
Coffee and cardiac diseases
When you drink coffee your heartbeat becomes more rapid and your blood pressure grows a bit. But the moderate use doesn’t lead to hypertension. Even people with high blood pressure may afford such pleasure. Up to recently there was an opinion that people having had heart attack have to stop drinking coffee or drink only decaffeinated one.
It was stated that coffee or caffeine entails the change of the heartbeat rhythm and may cause another heart attack. However the studies held in the UK and USA have shown that the use of the filtered coffee doesn’t lead to the change of the heartbeat rhythm in people experienced heart attacks. Therefore they have no need to renounce the coffee completely.
Coffee as the laxative
The caffeine itself is not a laxative. Practically decaffeinated coffee provides more laxative effect than the common one. The scientists are still trying to define which of the 300 organic substances appearing in the coffee beans the cause of the dejection stimulation is. At the same time coffee is considered to be natural diuretic.
The possible dangers
The assumption that the coffee increases the risk of pancreas cancer or other malignant tumors wasn’t proved. Moreover the recent studies allow to state that the coffee contributes to prophylaxis of the large intestine cancer.
At the same time the women should limit themselves in drinking coffee. The recent studies revealed that those women regularly drinking more 3-4 cups of the coffee per day experience the increased possibility of the osteoporosis (bones fragility) development after the menopause in the years.
Coffee is related to the most popular migraine causes. Many also note that cannot fall asleep without a cup of coffee before going to bed.
Those preferring decaffeinated coffee with an aim to avoid its stimulating action are affected by other chemicals. According to analysis of the organic solvents that are commonly applied to remove caffeine at least two of them are carcinogenic. The old and more reliable though less effective method is based on the use of the water for decaffeination as the caffeine dissolves in the water.
Coffee and woman
Pregnant and breast-feeding are to limit themselves and drink not more than one cup of milled or two cups of instant coffee per day as the human fetus absorbs caffeine and egests it quite slower than the adult body.
Being a diuretic coffee hastens the washing out of the calcium from the body. Large caffeine doses are associated with an increased risk of the osteoporosis development – that is the disease being characterized with fragile bones.
Coffee and the child
Even in medicinal aims it is allowed for the children over 2 years of the age to use the dosage of the caffeine 4 times lesser than the one appearing in the cup.
Greater dosages of the substance negatively affect the nervous system of the child: at first they stimulate and cause insomnia and then they drain the nervous cells thus making the child slack and sleepy and get tired too fast. Caffeine makes the breathe faster, increases heart stress making it beat faster, kidneys by increasing the urination and stimulates the excessive secretion of the gastric juice. Thus habituating the child to the “invigorative” drink you unconsciously are making him or her to wear out.
In case the cup of coffee in the morning has already became a necessity for the child it would be quite complicated to break of this habit. The matter is that the dependence of the caffeine is being formed on the molecular level! It replaces the adenosine being produced by the nervous system in order to calm down from the brain receptors. And in case the person has suddenly renounced the coffee he or she feels worn out.
In order the breaking the habit to be less painful it is advised to give the child a cacao boiled with milk in the morning. Nervous system is less sensitive to the caffeine analogue – theobromine that appears in the cacao powder. And the magnesium contained in it eases the weariness, nervous tension and contributes to the better assimilation of the calcium (that is so important for the children) from the milk. And do not forget that the less there is the sweetness in the drink, the better as the sugar added into cacao prevents to assimilation of the useful mineral substances.
“The day has passed as a dream; I was so up taken by its delightful music that I did not literally remember from the very morning about the food or drink after I had only a round of village bread and the cup of coffee in the tavern where I draw the spinner”. Van Gogh
It is soft stimulant that may improve the brain activity and increase excitability.
1. It may cause addiction and discomfort when renouncing it.
2. It causes insomnia.
3. It hastens the loss of the mineral substances in the bone tissue.
4. It causes migraine in sensitive people.
5. The excessive use may cause shiver and hastened heartbeat.
Caffeine is mainly contained in the coffee and tea however it also appears in chocolate, coca-cola, analgesics and anti catarrhal drugs.
Caffeine stimulates the heart and central nervous system and may improve the ability of intellectual work when the brain is slowed down. It also stimulates the production of the acid by the stomach thus improving the digestion and contributes to the hyperventilation of the lungs.
Though the caffeine is rather nontoxic it may cause an addiction. The excessive amount of the coffee or tea (one glass of teat contains about two thirds of caffeine appearing in the cup of the instant coffee) causes shiver, sweating, heavy heartbeat, hastened pulse, insomnia and also migraine. However you shouldn’t renounce the coffee at once as this may cause headaches, irritability and dormancy.
Caffeine contained in the drinks and chocolate causes insomnia in children. It is more difficult for the child to fall asleep after he or she has eaten a half bar of the dark chocolate or drunk a couple glasses of coke in the evening.
There is no need in complete renounce of the caffeine within infarction though it is better to drink tea and coffee in moderate amounts. Doctors advice to everyone to drink not more than 6 cups of the coffee or tea per day. But those experiencing increased blood pressure, heart or kidney problems should decrease the intake of these drinks or gradually exclude them from their diet.
Where is more caffeine?
Coffee takes the firs place by containing the caffeine but tea, chocolate and certain analgesics also contain it. Just compare the contents of the caffeine (mg) in 1 cup of the drink (150ml) or 125 g of the product:
Milled coffee – 115
Instant coffee – 65
Tea – 40
Coke – 18
Cacao – 4
Decaffeinated coffee – 3
Decaffeinated tea – 3
Dark chocolate – 80
Milk chocolate – 20
2 analgesics tablets – 60
According to the latest studies the instant coffee may prevent from heart diseases. This paradoxical conclusion was made by the English scientists. It turns to be that those drinking more than 5 cups of coffee per day experience lesser risk of cardiac diseases development. Those drinking less then 5 cups of coffee per day get such problems more often. And the most number of heart diseases are in those who do not drink instant coffee at all.
Unexpected results caused turmoil among scientists that have been studying this problem for the years as it was traditionally considered that excessive use of coffee increases the risk of heart diseases. Now it is quite complicated to say definitely whether these conclusions accidental or regular are. The experts having held the research explain them by the features of the instant coffee as it was never used in previous studies.