The effect of coffee on human health: harmful if caffeine
Coffee is surrounded by many contradictions: some ascribe to him the extraordinary harm while others go on about the usefulness of this drink. Coffee people in modern society are more than enough. However, most likely, none of them ever seriously thought about the impact caffeine. What is having the effect of coffee on the human body actually can eat it every day and whether there are indications for its use?
How does coffee
The influence of caffeine on the human body in the first place is expressed in the stimulation of the nervous system. Caffeine stimulates brain activity. The vessels dilate, and blood begins to circulate through the Central nervous system with greater speed. For this reason, the processes that occur in the Central nervous system, accelerates and comes to a person vivacity. In addition, coffee can increase sensitivity by increasing the nervous excitability.
That's why most loves to drink coffee in the morning, after waking activity of the brain has not yet gained momentum and is at a low level. After sleeping the nervous system is at rest and she needed time to adjust to wakefulness, or push that can give caffeine. However, this drink is not for everyone and quite often it happens that a person is ill after the coffee.
Coffee consumption is appropriate for those whose work requires special care and sobriety of mind, as it improves mental activity. People in old age mostly like this drink because it increases efficiency and gives strength.
How does coffee on the human body?
- improves brain activity and increases stamina;
- accelerates the processes in the cerebral cortex and this has a stimulating effect on the human body;
- coffee speeds up digestion and increases appetite;
- increases blood pressure and increases the heart rate;
- most importantly – has a bracing effect, removes fatigue and drowsiness, increases alertness and activity.
Of course, the more tangible effect of the natural coffee bean that is brewed according to the technology and not brought to a boil. Instant drink, which is sold in supermarkets, has such a refreshing action, and many may quietly you fall asleep after drinking a Cup. But after properly brewed organic coffee, drunk in the evening, all night not sleep a wink.
To drink coffee without action is dangerous, because this can lead to different adverse reactions. Especially risky to drink natural drink, as it contains large amounts of caffeine. Overdose of coffee may cause the appearance of the following symptoms:
- panic attacks, depression, irritability, irrational fear, dizziness and headaches;
- palpitations, arrhythmia, high blood pressure;
- after the coffee shakes, there is disorientation, severe agitation, exhaustion;
- stomach discomfort from the constant production of gastric juices;
- the inability to relax and go to sleep, and if the person falls asleep, he is half asleep. Appears nonsense that constantly interrupts the sleep, dramatically takes out of it.
Certain of the above reactions are commonly observed in coffee drinkers who used to drink one Cup of organic coffee after another. In acute poisoning with caffeine is its effect on the body is manifested in such symptoms:
- nausea and vomiting;
- frequent shortness of breath;
- delirium and convulsions;
- tachycardia and arrhythmia;
- redness of the skin.
Obviously, death from an overdose of coffee is rare, because in order to obtain a lethal dose of caffeine, you need to drink one hundred cups, and it is unreal. However, if you do not take action and continue to take this drink in the presence of the above symptoms, it can be followed by coma, collapse and even death.
The effects of coffee on digestion
Coffee contains many organic acids, namely citric, acetic, malic and oxalic. Due to their impact in the stomach, there is increased secretion of digestive juice and the person feels hungry. Roughly speaking, this beverage accelerates the processes of digestion and if you drink them with a hearty Breakfast, it is metabolized by the body much faster. And that's certainly a positive feature, provided a person does not have any major diseases and pathologies of the gastrointestinal tract.
A pleasant fact is that scientists not too long ago determined that coffee for the liver is useful. It is believed that coffee drink regenerates the liver on a cellular level and it is not surprising, since medicine has proven that bitterness is good for the liver. How it affects the body is not known, but, according to statistics, people who drink about three cups of organic coffee a day will not get any diseases such as cirrhosis, fatty liver and even liver cancer.
Unfortunately, soluble version of nothing good to say, except that some courage he gives. Its action is inversely proportional to the effect of natural. Regular consumption of this substitute may result in the exacerbation of chronic diseases, and on the liver it actsdestroying, therefore, to the question whether the harmful instant coffee, you can give a firm affirmative answer. To replace this natural drink coffee is like eating soup with bouillon cubes: the taste is similar to real chicken broth, but no use.
The high acidity of coffee can have a negative effect and make the problem worse due to the presence in its composition of organic acids. Therefore, before you drink this drink with this disease, be sure to get expert advice. In addition, if coffee is bad, what to do and whether it can be used to tell only a competent gastroenterologist.
As coffee is involved in metabolic processes
Caffeine rebukes many processes in the body, including metabolic, so coffee is shown to people who want to lose weight. Despite the fact that coffee drink increases the appetite, coffee is not prohibited by nutritionists, but rather is included in diets, as it promotes the breakdown of fat reserves.
Oddly enough, but this drink is useful for people with diabetes, and all because his action is aimed at accelerating the absorption of glucose. So individuals suffering from this serious disease, can afford to drink a Cup in order to cheer up, not worrying about the consequences.
Contraindications to the use
Considering how much coffee acts on the human body, it becomes clear that some of this refreshing and stimulating drink is contraindicated, as it can hurt. Here disease, in which coffee consumption should be kept to a minimum or completely eliminate it from your diet:
- instability of the nervous system, neuroses;
- serious disease of the psyche;
- hypertension and ischemic heart disease, arrhythmia;
- erosions and ulcers of the duodenum or stomach, gastritis, increased acidity.
As for cardiovascular diseases, in almost all cases, the coffee beverage is banned, as in the presence of a serious diagnosis, for the heart and blood vessels caffeine is unsafe. Tonly the specialist can determine whether such ailments sometimes to drink coffee and do not become harmful for the organism its action in a particular case.
There are many opinions regarding whether coffee during pregnancy. As coffee excites the nervous system and acts as a diuretic, expectant mother to lean on. It is better not to refuse its use, because it can affect the fetus, and nervous excitement still in the womb can result in different consequences.
Given that coffee invigorates, we can summarize that it is an indispensable drink for the person who leads an active lifestyle. We all have moments when it is imperative to assemble, and overcomes fatigue. If you drink coffee once or twice a day and not become addicted, it will only be a positive effect for the body and eat better eliminate.