Negative properties of green tea. For youth and beauty

Green tea gained popularity in our area not so long ago, unlike China, where its use has been around for several centuries, and many ceremonies are held in honor of this drink. We know everything about the benefits and harms of green tea from the Chinese, who use it not only to enjoy a delicious drink, but also to prevent and treat about four hundred diseases.

Many mistakenly think that the difference between greens lies in the plant used to make them. However, both for one and for the other species, the same leaves are collected - the tea bush or camellia sinensis. The only difference is in the pretreatment of the leaves.

So, green tea is subjected to oxidation, its fresh leaves, before they get to our table, go through the process of steaming.

Let's figure out what we can get from the regular use of green tea?

You have no idea how many beneficial properties green tea leaves have, thanks to which the drink will help to cope with an abundance of health problems. This is due to the rich chemical composition of the drink, the components of which have universal properties.

• Strengthens the nervous and endocrine systems of the body. Green tea is one of the best remedies for depression, polyneuritis and headaches. Its components have a good effect on the stress-exhausted nervous system. Its use also stimulates brain activity, improves concentration. The benefits of the drink are also noted for problems associated with hormonal disruptions. Also, green tea helps to cope with nausea while traveling in a car;
• Prevents cardiovascular disease. This drink lowers the level of cholesterol in the blood, helping to prevent the development of atherosclerosis, cerebrovascular disease and many other heart problems. Daily moderate consumption of green tea is useful for lowering blood pressure in hypertensive patients. Also, tea drink increases the elasticity of blood vessels and strengthens their walls, which is very useful to prevent the possibility of internal hemorrhages. The polyphenols that make up the tea prevent the accumulation of blood clots. In the end, green tea is worth drinking for the reason that it halves the risk of a heart attack and stroke;
• Improves the functioning of the digestive system. This tea drink well removes toxic substances from the body in case of food poisoning and dysbacteriosis. If you have an upset stomach, then strong green tea will help neutralize harmful microbes in the stomach and intestines, as well as increase intestinal tone and improve the motor functions of the digestive organs. Its regular intake improves digestion due to the content of tannin, which ensures the normal digestion of food. Thanks to the catechins contained in the drink, green tea is used as an antimicrobial agent for dysentery, the presence of coccal and typhoid bacteria in the body. It is also useful for colitis, accompanied by severe pain;
• Promotes weight loss. Many women who want to lose weight resort to taking green tea, as it speeds up metabolic processes, removes excess fat from the body and controls the level of norenaline, which is responsible for the formation of body fat;
• Has powerful antioxidant properties. Scientists have not yet figured out the exact mechanism of action of green tea against cancer, but many are inclined to its ability to cleanse the blood of carcinogens with the help of polyphenols. Moreover, this product strengthens the immune system, which also plays an important role in the prevention of cancer;
• Cleanses the body. With the help of this healthy drink, you can cleanse your body of toxins and salts of heavy metals, such as mercury, zinc, lead, cadmium and the most dangerous radioactive isotope - strontium-90. A tea drink is also recommended for people who sit in front of a TV or computer for a long time, as it facilitates the effects of harmful radiation;
• Is a natural biostimulant. Green tea is rich in vitamins and components that saturate the body with energy. If you want to be recharged with vivacity, good health and mood for the whole day - a morning cup of green tea will help you;
• Destroys fungi, viruses and bacteria. Regular intake of the drink strengthens the immune system and increases the body's resistance to diseases such as the flu virus, candidiasis, salmonella, herpes, as well as to many other viral and chronic diseases;
• Has a rejuvenating effect. No wonder green tea is called the drink of longevity. Its reception helps to preserve the health and youth of the skin, improve its color, strengthen hair and reduce their fat content. Due to the content of antioxidants, the drink slows down the aging process of the body. This is confirmed by statistics, according to which the majority of pensioners who have reached the age of 90 drink green tea throughout their lives;
• Prevents the development of diabetes. This is due to the presence of flavonoids, which have an action similar to insulin;
• Protects muscles from injury. This product is recommended for athletes, as tea polyphenols significantly reduce oxidation processes in the body;
• Improves the condition of the ENT organs. With rhinitis, green tea can be used to flush the sinuses. A warm infusion of green tea can relieve pain and inflammation in sore throat, pharyngitis, laryngitis and stomatitis;
• Protects the eyes. Lotions from green tea relieve inflammation in eye diseases such as conjunctiva, and also relax the eye muscles after prolonged visual stress;
• Improves the condition of teeth and gums. The content of fluorine allows you to use a tea drink for the prevention of caries and many other dental diseases;
• Speeds up the healing of burns. The drink contains tannins, which are characterized by a wound healing and hemostatic effect, so iced tea can be used to lubricate burns;
• Stimulates the excretory system. Drinking green tea improves the functioning of the spleen and liver, it is effective in preventing the accumulation of stones in the bladder, liver and kidneys;
• Ensures favorable development of the fetus. Thanks to zinc, green tea is good for pregnant women;
• Has a positive effect on the organs of the reproductive system. Men should pay attention to this tea drink, as it contains minerals that stimulate the production of the male hormone - testosterone.

Harm of green tea

Green tea is a rather specific drink, since, on the one hand, it is very healthy and safe to drink, and on the other hand, it can be harmful to health if it is improperly prepared and for some groups of people.

Harm of green tea from improper intake

• Overuse. Unwise intake of a drink in large quantities can provoke intoxication, nausea, headache, dizziness and excitation of the nervous system due to excess caffeine. If you drink tea in excessive amounts regularly, it will lead to the formation of kidney stones and gallbladder, as well as disruption of the liver and poisoning due to polyphenols, which in large quantities are not only useless, but also harmful;
• drinking old tea. If you store tea for a long time, purines accumulate in it, complicating the processes of excretion of uric acid, which increases the burden on the kidneys and provokes the ingress of uric acid into the intraarticular fluid, and this is dangerous for the development of gout;
• Co-administration with alcohol. This leads to the active synthesis of aldehydes that affect the kidneys;
• Fasting. Tea irritates the stomach lining, which can lead to ulcers;
• Brewing in boiling water. In such water, all the beneficial elements of tea leaves are destroyed, while the amount of harmful substances increases.

The harm of green tea in certain diseases

• With exacerbations of gastritis, ulcers and erosion of the stomach. This is due to the fact that regular intake of green tea increases the acidity of gastric juice;
• At elevated temperature. The composition of the drink includes theophylline, which increases body temperature, which can aggravate the patient's condition;
• With hypotension. The ability of a tea drink to lower blood pressure is dangerous for people suffering from low blood pressure;
• For gout. As we mentioned earlier, green tea contains purine bases that provoke this joint disease;
• With cardiac arrhythmia, hypertension, insomnia and excessive excitation of the nervous system. Green tea contains a lot of caffeine and alkaloids, which are stimulating components. Therefore, people with these diseases should use this drink with extreme caution.

Summing up, we can say that there is a very thin line between the benefits and harms of green tea, so if you decide to improve your health with this product, carefully study its properties, in which cases the drink is recommended, and in which cases you should refuse it. use. We hope this article will help you figure it out.

Popular green tea, whose benefits and harms are described below, has varieties that differ both in leaf varieties and the place of their collection, and in the type of preparation (semi-fermentation or its absence) and the presence of additional components (ginseng, jasmine, mint, lemon balm).

Depending on the taste preferences of a person, tea is consumed with honey, lemon, milk, mint, ginseng, jasmine, hibiscus, hot or cold. On sale there is this drink in different forms - in bags or in bulk. It is widely believed among buyers that the best tea is loose tea, and small fragments of leaves, stems and other waste from the production of loose tea are packed into bags. However, this is not always true, because the quality of the product depends on the variety, additional components (jasmine, hibiscus, rose) and processing, regardless of the form in which it was marketed.

Benefit

Due to its composition, tea is able to normalize blood pressure, has a positive effect on the kidneys. Green tea also contains a complex of vitamins necessary for the normal functioning of the liver.

1. B1 (19 mg) is involved in the processing and synthesis of fats, promotes their speedy dissolution and excretion from the liver;
2. B2 (1) stimulates the production of bile and accelerates its flow, preventing harmful substances from stagnation in the organ;
3. C (250) normalizes the metabolism between liver cells by increasing vascular permeability and helps to restore the organ in cases of cholecystitis and hepatitis.

The presence of catechins in the composition can affect the health of this organ and negatively. Scientists from the American College of Gastroenterology have determined that a daily intake of up to 500 mg of catechins for men and 450–470 mg for women is safe for liver dosing. Exceeding this dosage leads to inhibition of liver function.

This is especially dangerous in connection with the spread of biologically active additives, in which the content of catechin exceeds 700 mg. Daily use of such a dosage can lead to the destruction of liver tissues.

Tea has a beneficial effect on high blood pressure (hypertension). Theophylline (3-4%) - an alkaloid that relaxes muscles and eliminates spasms, promotes the expansion of blood vessels by relaxing their walls and increasing the gaps through which blood flows out.

As a result, blood circulation is normalized and blood pressure is reduced. A positive effect on the level of pressure affects immediately after drinking the drink, which helps to relieve an attack. With its daily use of 1-2 cups per day by hypertensive patients, the severity of the disease may decrease, and pressure surges will stop. Also, pressure has a positive effect of tannin, which increases vascular tone.

Caffeine causes a diuretic effect. This relieves swelling and removes excess fluid from the body. It also has a positive effect on the kidneys, because it contributes to their “washing” of sand (if any) and resists stagnation of urine. But if this drink is abused (using more than 600 ml per day), the content of salts and acids in the kidneys may increase, which provokes the formation of stones. This is because when dehydrated, the urine becomes more concentrated and the salts contained in it accumulate and form a sediment.

With milk

Perhaps the healthiest drink for tooth enamel is green tea with milk, tea bags or brewed from the leaves. Due to the high content of calcium (495 mg), it effectively strengthens tooth enamel and prevents its thinning. In addition, when consumed with milk, tea does not stain teeth (unlike black tea, the pigment of which is not always neutralized even by milk).

Another property that green tea in bags with milk is useful for is that it has an alkaline environment (thanks to milk), which means it can neutralize the acidity of the stomach. Therefore, the benefits of green tea with milk in any form for people suffering from heartburn, gastritis, and high acidity are obvious. When ingested, this drink, due to its alkaline environment, reduces the acidity of gastric juice. As a result, the severity of attacks of gastritis and heartburn decreases. To improve the taste, it can be consumed with honey, jasmine, mint, lemon balm and other additives.

With lemon

One of the important aspects of what green tea is useful for is its high content of vitamin C (250 mg, while in lemon 40 mg, and in black tea it is not at all), which can increase the body's immunity and resistance to bacteria, viruses and infections. . You can significantly increase the content of this substance if you drink a drink with lemon. On average, 1 cup of tea contains about 10 mg of vitamin C. Adding one slice of lemon, which contains about 4 mg of this vitamin, can increase its content in a cup to 14–15 mg. Vitamin passes into tea with proper brewing (you can not pour tea leaves with water with a temperature above 90 degrees). The drink is also useful for the liver due to the content of vitamin C, which normalizes intercellular metabolism in it.

Advice! To maximize the benefits of green tea for the body, it is poured not with boiling water, but with water at a temperature of 80-90 degrees and infused for about five minutes. Caffeine from the leaves is extracted into a drink at a water temperature of 85-90 degrees. And at a higher temperature, tannins begin to be extracted into the drink, which give it bitterness.

For one cup, you need to use 1 sachet or 1 teaspoon of leaves per 200-300 ml of water. After that add a lemon. It is better to sweeten such tea with honey, not sugar, because honey also contains vitamin C. To improve the taste, you can add lemon balm or mint during brewing, which reveal the taste to the best extent together with lemon.

With honey

Speaking about the benefits of green tea for the human body, it is worth mentioning the presence of vitamin C (250 mg) in its composition. Thanks to him, the drink helps to increase the immunity of the body. Imed is also characterized by the content of vitamin C (0.5 mg). Regular consumption of a hot drink with sdom is suitable for those who need to strengthen their immunity during epidemics of viral infections and cold weather.

Medic is equally effective regardless of whether it is added directly to the drink or consumed simultaneously with it. When adding honey to a drink, dissolve it in an amount of at least 1 teaspoon per cup. At the same time, 1 bag of tea or one teaspoon of leaves is used for 300 ml of water. To improve the taste, sedom tea can be used with crushed, lemon balm, lemon. In addition, honey tea is used by women and men for weight loss, as it satisfies the need for sweets and gives a feeling of satiety.

with melissa

Mint and lemon balm can not only significantly improve the taste, but also enhance the beneficial properties of green tea, regardless of whether it is in bags or in the form of whole leaves. In the composition of mint and lemon balm, as well as in the composition of tea leaves themselves, potassium is present (569, 458 and 6.4 mg, respectively). Potassium has a positive effect on the body, normalizing muscle function and relaxing the muscles.

Therefore, the benefits of green tea with lemon balm and mint are obvious for those who need to get rid of cramps and spasms. Drinking one cup of this drink hot has an antispasmodic and relaxing effect. To prepare one cup of drink with lemon balm or mint, you need a spoonful of tea leaves and one medium sprig of the plant. All this must be put in a cup and pour hot, but not boiling water. Insist 5-7 minutes.

Weight loss

Green tea with lemon, honey, jasmine or mint is an effective way to lose weight for men and women. Tea works in several ways:

1. caffeine and catechin in the composition of such a drink with honey significantly accelerate the metabolism with daily use and are responsible for faster burning of body fat and cleansing the liver of fats;
2. catechins also make tea with honey an effective diuretic, as a result, swelling of men and women decreases, therefore, body weight and volume decrease (the same property positively affects the state of the kidney and the level of blood pressure);
3. polyphenols in the composition of the drink with honey contribute to increased heat transfer, as a result, more energy is spent on warming the body, obtained by burning body fat, and weight loss is stimulated;
4. The presence of honey reduces the need for sweets and saturates with energy.

In order for weight loss to be active for both men and women, tea with honey must be brewed correctly. It is necessary to pour a leaf into the teapot at the rate of 1 teaspoon per 200–300 ml of water. Pour the tea leaves with water at a temperature of 80–90 degrees and let it brew. For the morning intake - 5 minutes during this time, the caffeine will have time to be extracted into the drink and this tea will give vivacity for the whole day. For lunch and evening - 2-3 minutes, but no more, to reduce the excessive invigorating effect of caffeine, which can cause insomnia.

After brewing, pour the tea into a glass and dissolve two tablespoons of honey in it. Use three times a day, 200 ml for women and 250-300 ml for men. Continue taking until the desired weight is reached. Sometimes, when losing weight, the drink is drunk with milk and honey 1 time per day in the morning, 250 ml each. The calorie content of such a serving is about 90 kcal. At the same time, it gives a fairly long feeling of fullness.

Harm

Green tea, the benefits and harms of which are discussed in the material, can not be taken by everyone.

• There is some harm to green tea when consumed with lemon. Since organic acids are not contained in lemon, its addition significantly increases the acidity of the drink. Acids have a negative effect on the teeth and destroy the tooth enamel of men, women in particular, in children, since they are thinner. However, such harm from green tea can be reduced by rinsing your mouth or brushing your teeth immediately after drinking it. The best way to remove acidity is to drink milk, as its alkaline environment neutralizes acids;
• The potential harm of green tea also exists for allergy sufferers. Although green tea is one of the most non-allergic teas, flavorings and additives with which it can be fortified (ginseng, hibiscus, jasmine, rose) sometimes cause intolerance. Quite rarely, a natural flower is used as a flavoring agent, for example, Jasmine, because it does not give a strong aroma, and the production of such tea is more expensive, so manufacturers replace it with a chemical analogue. It is to him that the reaction can begin. Regardless of which tea is purchased, in bags or leaf, it is important for allergy sufferers to find out what composition the product has in order to be sure that it does not contain flavors;
• The ability to lower blood pressure explains the contraindications of green tea for use by hypotensive patients. It can greatly expand the blood vessels, resulting in a drop in blood pressure. This can cause dizziness, weakness, drowsiness, and even fainting. If a man or woman is suspected of being prone to hypotension (low blood pressure), then it is better to refuse the drink;
• The use of milk reduces the acidity of the stomach. Milk has an alkaline reaction, and tea acquires the same when milk is added to it. When it enters the stomach, the drink reduces the acidity of the gastric juice, as a result, the digestion of food worsens. This feature explains why green tea is harmful for gastritis with low acidity;
• The diuretic effect of the drink is undesirable for kidney stones. The active flow of urine can cause the movement of stones and blockage of the ducts of men and women;
• The choleretic effect, useful for the liver, causes the displacement of stones in the ducts and gallbladder (if any). This can lead to blockage of the ducts;
• Catechins in the composition can have a negative effect on the liver;
• The controversial question is whether green tea is harmful during pregnancy. Since it relieves swelling, it is useful for expectant mothers. However, along with urine, potassium and calcium are washed out of the body. But this happens in small quantities.

If there are no contraindications, the drink can be consumed by men and women in any quantity. But even with contraindications, a person can sometimes treat himself to one cup of such a drink.

• increased sweating;
• weakened immunity, frequent colds;
• weakness, fatigue;
• nervous state, depression;
• headaches and migraines;
• intermittent diarrhea and constipation;
• want sweet and sour;
• bad breath;
• frequent feeling of hunger;
• weight loss problems
• loss of appetite;
• night grinding of teeth, salivation;
• pain in the abdomen, joints, muscles;
• does not pass cough;
• pimples on the skin.

If you have any of the symptoms or doubt the causes of ailments, you need to cleanse the body as soon as possible. How to do it .

If you find an error, please highlight a piece of text and click Ctrl+Enter.

Green tea is recommended for all people, it is advisable to use it without sugar and buy the best varieties of large-leaf green tea. It is useful both for athletes and for people who want to improve their mental performance, for example, to show better results at work.

Article content:

Useful properties of green tea

Tea strengthens the immune system, restores the functioning of the brain vessels, improves cardiac activity, relieves fears and nervous tension, increases the amount of sexual energy and creates balance in all body systems. You can also lose weight if you drink strong green tea every day, as it has a diuretic effect. But so far, only one property of green tea has not been fully studied - the fight against malignant tumors, of course, tea helps even with cancer, but research still cannot understand how this happens.

Most likely, this is due to cleaning the blood of bacteria and strengthening the immune system. Green tea reduces the level of radiation in the blood, this was proven after a study was conducted on the inhabitants of Hiroshima. Their health was normal, and it was precisely because they regularly consumed green tea. This is also associated with the removal of strontium-90 from the body, but if it is deposited in the bones, there can be no question of any purification. People should use green tea, if only because they spend a lot of time in front of a computer and TV, tea will reduce the effect of radiation on the body.

Green tea is used to enhance the sense of spirituality, this is confirmed by the fact that green tea is consumed in Japanese and Chinese tea ceremonies. Thanks to tea, people can fully concentrate and relax, this helps to improve mental concentration and the emergence of new ideas and goals. Many note that after drinking tea, new thoughts appear in the head, a solution to a particular problem is found, and so on. I am very pleased with the fact that tea does not contain substances harmful to the psyche, therefore it can be used as a stimulant of the psyche without the slightest fear. Conductivity of the nervous system, reaction, vision, memory and concentration on creative activities are improved when a person drinks green tea daily. Many people say that depression quickly disappears after taking green tea, perhaps this is due to the cleansing of the body of toxic substances, although other people believe that tea charges with a special positive energy that clears energy channels.

Also, do not forget that over a cup of green tea you can have a great time and talk heart to heart. You can learn something new about your friends, but you need to drink high-quality tea and always fresh. Of course, the packaging indicates the expiration date, approximately from one to three years. But fresh tea is much tastier than the one that has been stored for 3 years. Before buying, read the date of manufacture, you also need to familiarize yourself with the composition of the tea, artificial ingredients are often added to improve the taste of tea. It is possible that these substances were added in order to keep the tea longer, but these are preservatives that are harmful to health and degrade the quality of tea. But the manufacturer may deliberately add pieces of fruit, jasmine, lemon, chrysanthemum and hibiscus to the tea in order to confuse customers and shift attention from preservatives to additional ingredients. Supplements may well be artificial substitutes for fruits, so you need to buy pure green tea.

In our country, green tea was more popular than in Europe, as it was brought before the 19th century. Further, all the inhabitants of Russia began to drink black tea, which is also very tasty, but far from being so useful. This is due to the fact that black tea undergoes additional processing. It is because of the habit of black tea that people brew green tea incorrectly. You can not brew it with boiling water in a huge teapot, and then add sugar - this reduces the beneficial qualities of green tea. You need to use warm enough water, but not boiling water, and let the tea brew for at least half an hour to feel its natural taste. Only properly brewed green tea has beneficial properties, but if you don’t want to waste time brewing, buy green tea capsules at the pharmacy, they also have all the beneficial properties, however, you won’t be able to enjoy the true taste of green tea.

Harmful properties of green tea

Green tea has many advantages, but there are also disadvantages. For example, it can provoke a deterioration in thinking, concentration, increase blood pressure, and so on. You can give up black tea and coffee because you don't want your blood pressure to increase, but keep in mind that green tea also contains invigorating substances, and in the same amount. It also contains caffeine, which activates the central nervous system.

Strong green tea should not be consumed by older people and pregnant women. Tea can affect the development of the fetus due to the general excitability of the body. Older people are at risk of getting tremors - shaking hands, as well as reduced immunity and insomnia. Tea is not recommended for people with stomach ulcers and hypertensive patients.

To reduce the intensity of the side effects of green tea, you need to consider that you can not brew it too hard. The tea should have a mild and delicate taste that does not irritate you in any way. Do not drink hot green tea, as this negatively affects the digestive tract. Drink fresh green tea half an hour before meals, then you can drink a mug after 40 minutes to speed up the digestion process. Do not steep tea for too long, because the microbes in it multiply rapidly, and then poison your body.

Everyone knows about the healing properties of green tea. And many are sure that this delicious drink is completely harmless, because it has so many health benefits. But there are hidden dangers in this health drink, which will be discussed: the harm of green tea.

Based on research conducted by the UK Tea Council (UK Tea Council), it was found that a healthy drink with excessive use can cause side effects to human health.

What harm can green tea do?

The harm of green tea is expressed in its side effect, which experts associate with the content of caffeine and tannins (tannin and catechin).

In the meantime, tea has enormous health benefits. Read, Green tea prolongs life.

Tannins. In their effect, the tannins contained in the tea leaf are similar to vitamin P, they strengthen the walls of blood vessels and capillaries. The tea itself is given flavor and astringency. But their high concentration in tea irritates the walls of the stomach, they slow down the absorption and assimilation of certain trace elements and can disrupt the functioning of the liver and kidneys.

Caffeine- a purine alkaloid, is a powerful stimulant of the human nervous system, which has a number of positive effects on health. But an overdose of the alkaloid causes disruption of the heart, stomach, intestines and other body systems.

With an overabundance of even the most useful food, the body is in danger, because all products contain chemical elements and biologically active substances that the body cannot absorb indefinitely. Their excessive exposure takes the body out of the comfort zone, causing failures and disruptions in the functioning of organs and systems.

Side effects or why to comply with the norm

Scientists have established a number of side effects that occur more often with an overdose of green tea, which is harmful for both women and men.

Changes the acidity of the stomach

Green tea changes the acidity of gastric juice, increasing it above normal, which causes irritation of the walls of the stomach and can provoke heartburn. Scientists came to this conclusion, studies have shown that tea stimulates the production of stomach acid.

To neutralize its effect on the walls of the stomach, you can add sugar to tea, which, again, is not welcomed by everyone. It is better to drink a drink after a meal or between meals, when the stomach has not yet been freed from food.

People with high stomach acid and peptic ulcer need to be more careful in drinking this drink.

Reduces iron absorption

Since tea is drunk only after a meal, it interacts with substances contained in food. It has been established that caffeine, or rather theine (the variety that is contained in tea, differs in that it is absorbed only in the intestines), reduces the absorption of iron by 25%. This applies more to the non-heme iron found in eggs, dairy products, and plant-based foods.

But this harmful effect on the body, fortunately, can be neutralized if you add fresh lemon juice to a cup of tea or eat vegetables and fruits saturated with vitamin C first (greens from the garden with darkly colored green leaves, tomatoes, broccoli, lemon, currants) .

For women, it is important to observe moderation in tea drinking. Often without that, they suffer from anemia and iron deficiency, and large concentrations of tea exacerbate this situation. During pregnancy and breastfeeding, the concentration of caffeine can affect the development of the fetus and the health of the child.

Contributes to the development of chronic headaches

If a person constantly consumes drinks containing caffeine, the body gradually gets used to it. And with a lack of this “doping”, he responds with a long headache. This is a kind of caffeine addiction, causing a kind of withdrawal when it is not enough.

Additional intake of drinks solves this problem after 25-30 minutes, but is it worth accustoming your body to such an addiction? If headaches appear due to a lack of caffeine doping, it is better to completely abandon such drinks. After all, these symptoms will gradually increase.

Sometimes people have chronic headaches that turn into migraines. Studying such cases, scientists have found a connection of such pain with the use of drinks (in large doses) containing caffeine.

Causes anxiety and nervousness, interferes with restful sleep

All these symptoms are more pronounced in sensitive people with overdose. It's all about the substance xanthine, which is a purine base and a precursor of uric acid. Its derivative is caffeine.

Its side effect on the human body is the ability to block sleep hormones in the brain, and it also activates the production of adrenaline.

Increases heart rate and blood pressure

Sometimes there is a rapid contraction of the muscles of the heart (palpitations) or abnormal contraction, with rhythm disturbance. As a rule, such failures and violations pass quickly. And if such cases take place, then it is better to talk with your doctor, undergo an examination and identify the true cause of the deviations.

If a person has an increased sensitivity to caffeine and its derivatives, then it is better to refuse drinks containing it in their composition.

You should not get carried away with drinks and people with high blood pressure, the fact that caffeine affects the increase in pressure is well known.

Causes diarrhea

This feature directly depends on the individual sensitivity of the organism. In the lining of the mucous membrane of the digestive organs, a huge number of neurons (nerve cells and endings) are concentrated. Therefore, the digestive organs are very sensitive to all chemicals that come with food.

And drinks containing caffeine are rich in organic acids (citric, succinic, malic, oxalic), which stimulate the production of bile. At some point, this plays a positive role.

But accumulations of bile, in turn, trigger mechanisms in response to the effects of biologically active substances that make you run to the toilet. For those on whom caffeinated drinks have a laxative effect, it is best to avoid them.

Promotes heartburn and vomiting

Medical experts acknowledge the fact that caffeinated drinks can cause heartburn. This is explained by the fact that when the mucous membrane is irritated by caffeine derivatives, the production of hydrochloric acid increases.

And since the active substances also have vasoconstrictive abilities, this to some extent disrupts the work of the sphincter, which does not work on time and passes hydrochloric acid into the esophagus.

Do not drink the drink hot, as it irritates the gastric mucosa more and do not work in an inclination after drinking a cup of tea.

An overdose of tea sometimes causes nausea, which turns into vomiting, which is rare. This is also associated with a change in the acidity of the stomach and the irritating effect of active substances on the vomiting center of the brain.

Possible dizziness, ringing in the ears

Caffeine derivatives have insidious properties. In small doses, they increase blood pressure, cause vasospasm, which can cause dizziness.

With an overdose, on the contrary. lower the pressure. And again, they cause weakness and dizziness. You may experience ringing in the ears, especially with high blood pressure.

Causes trembling of the limbs and lack of calcium in the body

Can I drink cold tea

Experts do not recommend drinking both too hot tea and cold tea. Hot tea can burn you, and frequent consumption of hot drinks causes a mutation in the epithelial cells lining the throat, leading to the formation of a malignant tumor.

Cold tea, after standing, quickly oxidizes, which leads to the destruction of the vitamins, minerals and active biological substances contained in it. There will be no particular harm from this, just thinking about the usefulness, you will drink a pacifier. But in cold tea, a favorable environment for the reproduction of bacteria is still created.

The biologically active substances contained in green tea, which bring benefits, can be potentially harmful to health if consumed in excessive amounts. The harm of green tea for the body lies only in this reason. If you follow the rule of the golden mean, then all problems will go aside.

The judicious use of tea turns the caffeine and tannin contained in it into friendly substances that bring only health.

• And in this article, read about the benefits:

Drink tea wisely and be healthy!

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Amazing drink. Its healing properties are legendary. Although its difference from black and white tea is only in the technological features of production. All types of tea are obtained from the same tea bushes. A special processing method allows you to activate all the trace elements contained in the tea leaf. To varying degrees, tea contains powerful antioxidants, flavonoids, tannins, caffeine, minerals, polyphenols, vitamins and other beneficial substances. Many of the elements that it contains have not yet been fully studied. The chemical composition of tea can change during processing, as it grows, and during preparation.

Useful properties of green tea

• Green tea is a natural energy booster. Tannin and caffeine increase working capacity, have a tonic effect.
• It is an antidepressant, a kind of stabilizer of the nervous system. Tea has restorative and soothing properties. To relax, you need to brew a weak light tea.
• Reduces bad cholesterol. It supplies the cells of the body, ensures proper blood circulation, and prevents the formation of fatty thickenings.
• The use of green tea serves as a prophylactic for hypertensive patients. With regular, but moderate use, pressure normalizes.
• The tea leaf is a means for weight loss. It helps to reduce weight by activating metabolism. Combining the intake of tea and sports, you can reduce cellulite, remove toxic substances from the body.

How green tea affects the functioning of organs

Green tea affects the functioning of all human organs. Numerous studies conducted by scientists from different countries have proven this. The effect of green tea on the body continues to be studied.

Effect on the liver

Green tea has a positive effect on liver function. Despite this, during the period of exacerbation of the disease, with acute inflammation, experts recommend refraining from taking this drink. This is due to the content of antioxidants and polyphenols in it, which in excess lead to impaired functioning of the kidneys and liver. The organs do not have time to process and remove a large amount of these substances, a complication begins. It does not threaten a healthy person. Green tea, which has a beneficial effect on the liver, controls the production of collagen, the process of its accumulation in cells, and prevents pathological changes in the organ.

Effect on pressure

Green tea contains a lot of caffeine, despite this, it can also help hypertensive patients. The action is milder than the effect of caffeine contained in coffee. The pressure rises very slowly, and then only if it is low. In most cases, a cup of aromatic tea only normalizes blood pressure, improving well-being. Of course, a prerequisite is moderation.

Impact on men's health

There is a lot of controversy around the issue of the effect of green tea on the human body, and men in particular. Studies show that regular tea consumption improves male potency. Green tea contains trace elements of zinc, which activate the male hormone testosterone.

Effect on the skin

Green tea is widely used in cosmetology. It is used in the production of many products, creams, dietary supplements, lotions. At home, it is enough to wash your face in the morning and evening with freshly brewed infusion. The result will be visible very soon: the skin tone will increase, unhealthy rashes will go away. A mask based on green tea, flour and egg yolk helps. It will straighten fine wrinkles, return the skin a pleasant color. Green tea ice cubes are an excellent tonic when rubbed on the face.

Impact on digestion

Green tea, when taken regularly, has an effect on the digestive tract, forcing them to work. As an antimicrobial agent, green tea is taken for dysentery. The drink can serve as a prophylactic for cholelithiasis and urolithiasis.

Effect on metabolism

Often green tea is used for weight loss. This is due to its ability to normalize metabolism, improve metabolism, drown out the feeling of hunger. Keeping the body in good shape, improving the condition of the nervous system, it helps to more easily endure the diet, contributing to weight loss. A large amount of vitamins contained in tea nourishes the body, saturates with useful substances.

Green tea contraindications

Drinking a drink in large volumes can lead to an exacerbation of various diseases dormant in the body. For example, in moderation, tea can improve the functioning of the digestive tract; in case of an overdose, it causes gastritis or an ulcer.

People suffering from rheumatism should be careful about taking this miracle drink too much. Tea forms urea in the body, it remains in the joints, settling in the form of salts.

Strongly brewed tea puts a strain on the heart. This can lead to insomnia and constant nervous system arousal.

Green tea can be harmful during pregnancy. It prevents the breakdown of folic acid, which is very important for the brain development of the baby. This is due to the content of epigallocatechin gallate in tea. Also, tea does not allow iron to be absorbed, this can lead to anemia.

Harm from misuse of tea

• You can't drink yesterday's tea. Purines accumulate in it, bacteria can develop. The most useful and safe is only tea that is brewed immediately before tea drinking.
• Large consumption of green tea (more than 3 cups a day) leads to dizziness, nausea.
• Green tea and alcohol taken together can be detrimental to the kidneys.
• Green tea should not be drunk very hot. It acts negatively on the internal organs, burning them and deforming them.
• It is recommended to brew tea with water that has not come to a boil, so as not to kill many valuable substances.