Today the topic of our conversation will be green tea: benefit and harm. About green tea recently said so much that it is not difficult to get confused in all this abundance of information. Let's try together to sort it out and figure it out. Green tea is considered one of the most powerful antioxidants. And as you know, antioxidants affect the body in the most positive way - they actively excrete toxins and prevent the formation of new ones. That is why green tea is very useful for a variety of diseases. 
Composition of green tea
First you need to find out what is included in the green tea. Knowing this, it will be easier to understand the useful and harmful properties of this drink. So:
- Tannins
Green tea contains from 20 to 30% of tannicsubstances - such as polyphenols, catechins, tannins and others. By the way, the notorious tannin in green tea is about twice as large as in its black fellow. Moreover, the higher the grade of green tea, the higher the level of its content in this product, and therefore its utility.
- Essential oils
Essential oils in green tea at first glancecontains only a little - only 0.5%. Most of these oils are completely lost when processing tea leaves. However, it is these oils that give green tea its unique flavor.
- Alkaloids
Few people know, but green tea containsa fairly large amount of caffeine. However, unlike coffee, caffeine in green tea comes into a chemical reaction with tannin, resulting in its effect on the body is softer and more gentle.
- Amino acids
Green tea contains a large amount of glutamic acid. It is extremely important for the normalization of the central nervous system and the stimulation of metabolic processes.
- Vegetable proteins
Green tea contains a huge amount ofprotein substances - not less than 25%. This is about the same as in legume crops. However, the proteins contained in green tea are assimilated by the human body much better than all the others.
- Minerals
Approximately 7% are trace elements such as gold, copper, calcium, fluorine, potassium, magnesium, manganese. All these elements are extremely necessary for the normal functioning of all internal organs.
- Vitamins
Green tea contains a large amount ofvarious vitamins. For example, vitamin A - it is responsible for the state of virtually all mucous membranes: the oral and nasal cavity, internal organs. In addition, it is this vitamin that normalizes vision. In green tea contains a huge amount of vitamin C - five times more than in citrus fruits. And also thiamin, folic and nicotinic acid. 
Application of green tea
On the beneficial properties of green tea to mankindwas known many centuries ago. It was used not just to maintain vitality, but also to treat a fairly large number of various diseases. Which ones? Now you will find out:
- Low pressure
Due to the high content of nicotine, greentea is a potent biological stimulant. Do you have low blood pressure? Drink just one cup of green tea - and it very quickly normalizes the level of pressure. But do not always solve the problem with green tea. If your blood pressure drops regularly, it makes sense to seek medical help from a doctor. After all, often low blood pressure indicates the presence of serious diseases. So do not risk your health.
- Normalization of the nervous system
Green tea finely normalizesthe work of the central nervous system. It not only restores the exhausted nervous system, but also increases its resistance to various types of stressful situations. Pay special attention - if you use green tea to strengthen the nervous system, it should never be brewed too hard.
- Vascular elasticity
Even in the healthiest person with the coursetime, the fragility of the blood vessels, especially the capillaries, inevitably increases. Numerous studies have confirmed that regular use of green tea not only strengthens the walls of blood vessels, but also increases their elasticity several times. This minimizes the likelihood of any internal bleeding.
- Prevention of heart disease
Doctors suggest that regular useGreen tea - at least one cup per day - reduces the risk of developing various heart diseases by 50%. Including myocardial infarction. Moreover - the course of already existing heart diseases will be facilitated, the rehabilitation period after heart attacks and strokes is shortened at times.
- Poisoning and intestinal infections
Green tea contains substances such ascatechins. They have an excellent antimicrobial effect, especially with regard to coccal and dysentery bacteria. Only two - three days of receiving green tea are fatal for the pathogenic microflora. However, tea will have to be cooked a little differently. Place in a glass container 50 grams of green tea, pour one liter of cold water, leave for about 30 minutes. After this, simmer for an hour, leave to stand for another 30 minutes, then strain with gauze. A sick person should drink this volume in small sips, for two to three hours. In a day you can drink no more than three liters of green tea, cooked in this way. And a similar tool can be used even for the treatment of children. Of course, in this case it is necessary to reduce the dosage - two teaspoons for every five kilograms of weight.
- Indigestion
In the event that you have anydigestive disorders - diarrhea or constipation, green tea will also come to your rescue. In the event that problems with constipation, drink three times a day, slightly boiled green tea without sugar. And drink it must be no later than 15 minutes before eating. As a rule, the stool is normalized already on the third - the fourth day. But the course of treatment still should last at least 14 days, so that the problem does not recur. But in the event that you have a loose stool, green tea should be brewed as tightly as possible. Drink one cup of green tea every two hours, until the chair is normalized. Do you remember that green tea has powerful bactericidal properties? Therefore, the entire pathogenic microflora dies very quickly. Moreover - a similar tea very effectively increases intestinal tone.
- Treatment of colds
As you know, it is with coldsa person experiences throughout his life most often. And green tea in this situation is your first assistant. However, pay attention - it is unacceptable to use green tea for the treatment of colds in the event that the body temperature is above 37 and 5 degrees, as there is a very heavy load on the cardiovascular and excretory systems. To treat any type of cough, you need to prepare the following mixture. In the thermos put five tablespoons of green tea, on the tip of a knife of red pepper and pour one liter of steep boiling water. After about three hours, strain the tea with gauze cloth and add five tablespoons of any natural honey. Take the solution in warm, small sips throughout the day. With a cold, it is extremely useful to wash your nose with a weak brew of green tea. Place one tablespoon of tea leaves in a glass container and pour half a cup of boiling water. Insist only five minutes. Do not forget to strain, otherwise you will be provided with a sneeze. The nose can be rinsed with an ordinary disposable syringe. Of course, without needles. To eliminate a runny nose, 6-7 washings per day are necessary. In the event that you have a sore throat, or even purulent angina has not spared you, you can cope with the disease with a strong brewed green tea. For this, pour two tablespoons of green tea with one liter of boiling water and insist for an hour. Add five drops of iodine and use the resulting gargling solution. To eliminate pain, rinse your throat as often as possible - at least once a day. After the pain is less, the break between rinses can be increased to three hours. 
The damage of green tea
And one more natural question. And what are the harmful properties of green tea? And indeed - in addition to the huge advantages of green tea has a number of shortcomings. Although it would be more correct to say - a number of contraindications. In the event that you suffer from the following diseases, you should give up green tea. Or, at least, reduce its use to a possible minimum. So:
- Hypertension
There is an opinion that green tea is absolutely notincreases the pressure. However, this is not so - it contains a considerable amount of caffeine. And so people who have a tendency to increase blood pressure, you can not get involved in green tea. Especially in the case when hypertension occurs in an acute form. The maximum that such people can afford is one or two cups of weak tea. In this case, the harm of green tea will be minimal.
- Hyperthermia
As already mentioned above, in no case can you drink green tea at high body temperature. Otherwise, the risk of disrupting the urinary system is high.
- Diseases of the gastrointestinal tract
Green tea provokes a rise in the levelacidity of gastric juice. Therefore it is not recommended to drink it to people suffering from gastritis with high acidity, peptic ulcer of the stomach and duodenum. Try to completely exclude green tea. But in the case of a low acidity of the stomach, green tea will come at an opportune time. But do not forget that you need to consult your doctor beforehand. In the end, only after certain studies can you find out the level of acidity of gastric juice. And hold them only a doctor.
- Problems from the central nervous system
Since the composition of green tea is largethe number of excitatory substances such as theophylline, theobromine and caffeine, which act on the work of the central nervous system is exciting, it is highly not recommended for people suffering from increased excitability and insomnia. Otherwise, the situation will only worsen - the harm of green tea in this case is beyond doubt. In addition, remember that green tea should not be drunk on the same day when you were drinking alcohol, even if it was absolutely low-alcohol drinks. But very often people try to get rid of the feeling of intoxication in this way, without knowing anything about the harm of green tea in this situation. Certain substances contained in green tea interact with molecules of ethyl alcohol, resulting in a large amount of aldehydes. And these aldehydes have the most negative effect on the urinary system. In the end, the most innocuous, than such an attempt to improve one's health can result in the development of strong edema. And in the worst case - and at all kidney failure. And finally I would like to draw attention to the tea itself - the benefits of green tea in bags is very doubtful. Try to choose and purchase elite varieties of green tea. It is not so expensive, and the benefit is incomparably higher. Drink green tea with pleasure and always be healthy! We advise you to read:
