Benefits of green tea. Useful properties of green tea. Is green tea really that good? Benefits of tea for teeth

So many good words have been said about him that it is even somehow inconvenient to discuss the benefits and harms of green tea. But many, although they know about its healing abilities, cannot say for sure what they are. Usually, the matter is limited to a couple of properties - “cleanses blood vessels”, “helps to lose weight”. What is the uniqueness of the drink then? Let's figure it out!

Green and black tea are not even relatives, otherwise they are essentially the same “character”, because the tea leaves for the first and second types are collected from the same bushes. It's all about processing. Green tea, unlike black tea, is not fermented. Moisture is simply evaporated from it. Thanks to the sparing production technology, it completely retains in its composition the valuable substances inherent in nature.

What are these components that determine the properties of green tea and its benefits and harms? It contains a real arsenal of antioxidants. There are as many of them in a cup of emerald drink as in ten glasses of apple juice! About 15-30% of its composition falls on tannins. This is up to 30 types of polyphenolic compounds, including tannin, catechins and others.

The peculiar aroma of green tea is provided by the presence of essential oils, and they largely determine the quality of such a drink. It contains amino acids, among which glutamic acid should be noted - it puts the metabolism in order and restores “shattered” nerves. Green tea contains vegetable proteins, so it will not only give you drink, but also feed you.

To explain the benefits of green tea, just look at the list of its medicinal properties.

Healing effect of green tea:

inhibits aging, prolongs youth, increases lifespan: this effect is associated with a high content of antioxidants;
reduces the likelihood of getting cancer: Japanese scientists have been conducting studies for 12 years that have confirmed that the daily use of such a “product” significantly reduces the growth rate of a malignant tumor (but to obtain such a result, you need to drink up to 1.5 liters of tea, which is 19 cups) ;
improves immunity;
removes toxins, carcinogens, neutralizes toxins;
supports the heart, reduces the risk of a heart attack by half;
promotes the destruction of excess fat, suppresses appetite, which helps in the fight against excess weight;
improves metabolism;
removes "bad" cholesterol;
stabilizes blood sugar levels;
increases the strength of blood vessels;
reduces cravings for alcohol;
activates brain activity;
protects the liver from the destructive effects of alcohol;
reduces pressure (by 10-20 units);
prevents the appearance of caries and inflammation of the gums;
provides sharp vision;
gives vivacity, increases efficiency;
neutralizes Negative influence waves emitted by a computer monitor.

It is widely believed that green tea is better than ordinary water at quenching thirst and restoring water losses.

Does the drink harm the kidneys?

What is green tea for the kidneys? Benefit or harm to this vital organ from such a drink? It is a powerful diuretic. If you drink it like water - often and in large quantities, then you can bring yourself to dehydration. This will help increase the concentration of salts and acids in the kidneys. As a result, stones will appear in them.

It is strongly not recommended to use it in large quantities for those people who suffer from diseases of the urinary system. Urologists advise limiting yourself to a couple of small cups a day. And after drinking tea, you must definitely drink 250 ml of plain water to compensate for the loss of fluid.

That's how I cured it! Possible negative consequences

Among drinks for daily consumption (we are not talking about herbal decoctions) it is difficult to find a more multifunctional "drug" than green tea. Its benefits and harms to the body are incomparable.

But this does not mean that if you drink it in liters, you can throw away all the medicines from home first aid kit and forget the way to the clinic. Green tea requires careful handling. If you drink it without measure, too strong, and even on an empty stomach, then you can encounter very unpleasant side effects.

Adverse reactions that green tea can provoke:

headache;
nausea;
dizziness;
sleep disorder;
irritability;
liquid stool;
tremor of the limbs;
heartburn;
feeling of discomfort when urinating;
convulsions.

To avoid such "surprises", it is enough to adhere to simple rules: drink only high-quality tea, consume no more than 2-3 cups per day, take the last portion at least three hours before bedtime, do not swallow a burning drink (if its temperature is above 60 degrees, it will increase the risk of stomach cancer).

Important! If you drink green tea in liters, then you can “drink up” to liver problems, as an overdose of polyphenols will occur.

And I would drink, but health does not order!

If you drink it without taking into account contraindications, then all the benefits of green tea will come to naught. Even such an eminent "doctor" is not shown to everyone.

Diagnoses in which it is better to refuse such a drink:

urolithiasis: since green tea has a rather pronounced diuretic effect, it can provoke the movement of stones;
anemia: this drink impairs the absorption of iron in the body;
ulcer, serious pathologies of the digestive system: if there are such problems, then you will have to exclude this tea from the menu, because it increases acidity;
nervous disorders that are accompanied by overexcitation, insomnia, tachycardia: tea will only aggravate the patient's condition, as it contains caffeine;
hypotension: from green tea, the pressure will drop even lower, but this will not happen if you cook it in a weak concentration, but if you pour a “heaped” spoon into one cup, then blood pressure can drop to critical levels;
gout.

Green tea is also not suitable for young children, because their nervous system is still developing. This means that they do not need to take “stimulants” (even natural ones).

Exist different opinions regarding whether green tea is allowed for expectant mothers. Its benefits and harms to the body of a pregnant woman have not yet been fully investigated. But gynecologists do not recommend leaning on it in the first trimester, as it brings the uterus into increased tone, which causes the risk of fetal rejection.

Starting from the fourth month, such a strict ban is lifted, but in order to eliminate even the slightest risks for the baby, it is better for a woman "in position" to limit herself to one cup of this "medicine" per day.

Drink, so according to the rules!

So how can you use its health-improving properties to get the full benefits of green tea? To on own health to feel the healing power of the drink of Japanese centenarians, you need to learn how to cook it correctly.

Five main secrets of making green tea:

for brewing, use a faience (in extreme cases, ceramic) teapot with a lid;
take clean (not tap!) water, add 1 small spoonful of tea leaves to 250 ml of liquid;
pour them into a preheated teapot;
wash the tea leaf with mild boiling water (this will reduce the concentration of caffeine), then pour it hot water(with temperature from 70 to 85°);
do not dilute tea with water, but instead of sugar, take honey instead (add it when the temperature of the drink drops to 50 degrees).

Important! According to connoisseurs of tea traditions, such a drink gives out all its healing properties only from the third brew!

Green tea is obtained from an evergreen plant. The drink has been known in China since 2700 BC. Then it was used as a medicine. In the 3rd century AD, the era of tea production and processing began. It became available to both the rich and the poor.

Green tea is produced in factories in China and grown in Japan, China, Malaysia and Indonesia.

The composition and calorie content of green tea

Green tea contains antioxidants, vitamins A, D, E, C, B, H, and K, and minerals.

The calorie content of a cup of green tea without sugar is 5-7 kcal. The drink is ideal for weight loss.

Green tea is good for heart, eye and bone health. It is drunk for weight loss and type 2 diabetes. The benefits of green tea will be manifested if you consume 3 cups of the drink per day.

Green tea neutralizes the influence of harmful fats, bacteria and viruses, such as staphylococcus aureus and hepatitis B.

For the bones

Green tea relieves pain and inflammation in arthritis.

The drink strengthens bones and reduces the risk of osteoporosis.

The caffeine in green tea improves motor activity and reduces fatigue.

For the heart and blood vessels

Green tea reduces the risk of heart attack and stroke.

People who drink green tea daily have a 31% lower risk of heart disease compared to non-drinkers.

The drink prevents atherosclerosis and thrombosis. It improves blood flow and relaxes the arteries.

Drinking 3 cups of green tea a day will reduce the risk of stroke by 21%.

For nerves

Green tea improves mental alertness and slows down brain degeneration. The drink calms and relaxes, but at the same time increases alertness.

Theanine in tea sends a “feel good” signal to the brain, improves memory, mood, and increases concentration.

Green tea is useful for treating mental disorders including dementia. The drink prevents nerve damage and memory loss that leads to Alzheimer's disease.

In a study presented at the 2015 International Alzheimer's and Parkinson's Conference, those who drank green tea 1-6 days a week experienced less depression than those who didn't. In addition, the researchers found that tea drinkers hardly suffered from dementia. The polyphenols in tea are beneficial in the prevention and treatment of Alzheimer's and Parkinson's disease.

For eyes

Catechins protect the body from glaucoma and eye diseases.

For the gastrointestinal tract

Green tea improves digestion and protects the liver from obesity.

For teeth and gums

The drink improves the condition of the periodontium, reduces inflammation and inhibits the growth of bacteria in the oral cavity.

Green tea protects against bad breath.

A study found that people who consumed at least 6 cups of green tea a day had a 33% lower risk of developing type 2 diabetes than those who drank 1 cup a week.

For kidneys and bladder

The caffeine in green tea acts as a mild diuretic.

For skin

Organic green tea extract ointment is useful for treating warts that are caused by human papillomavirus. The researchers selected more than 500 adults with the disease. After treatment, warts disappeared in 57% of patients.

For immunity

The polyphenols in tea protect against cancer. They reduce the risk of developing breast, colon, lung, ovarian, and prostate cancers.

Women who drank more than 3 cups of green tea a day reduced their risk of breast cancer recurrence as polyphenols stop production and distribution cancer cells, as well as growth blood vessels that feed tumors. Green tea enhances the effect of chemotherapy.

Green tea is popular not only because of its refreshing light taste, but also due to a bunch of useful properties. This tea has been considered a medicine for several millennia, ever since it began to be cultivated in China. The tea leaves collected from the bushes undergo minimal fermentation (unlike red and black teas), so they retain a maximum of antioxidants and polyphenols.

Green tea stimulates metabolism.

Weight loss. Green tea helps boost your metabolism. Polyphenols speed up the process of fat oxidation and slow down the transition of food into fat reserves. However, there is no need to abuse this knowledge, because if you drink green tea hamburger or cake, you will not get any benefit.
. Green tea reduces the rate at which glucose rises after a meal. Thus, green tea helps to avoid sugar peaks and the subsequent episode of overeating.
. It is believed that green tea antioxidants help blood vessels adapt to changes in blood pressure and reduce the risk of thrombosis, which often leads to pain in the limbs, angina attacks and heart attacks.
Cancer. It has been proven that regular consumption of green tea due to the high concentration of antioxidants in it reduces the risk of developing cancer of any localization.
Cholesterol. Green tea lowers low-density lipoprotein levels, which are responsible for plaque formation.
Alzheimer's disease and Parkinson's disease. Studies in mice have shown a reduction in the rate of destruction of nerve cells and neuronal sheaths and an increase in the rate of repair of nerve tissue. This suggests that one to two cups of green tea a day can help us avoid neurodegenerative diseases.
Strong teeth. One of the antioxidants - catechin - destroys pathogenic bacteria and viruses that cause caries and inflammation in the throat and mouth.
Arterial pressure. If you drink just two cups of green tea a day, then the risk of arterial hypertension is reduced by 45-65 percent!
. Theanine - an amino acid from tea leaves - is necessary for the processes of relaxation, calming and restoring peace of mind.
Skin care. The use of tea inside, the use of compresses and masks with green tea helps to cope with early wrinkles and skin imperfections.
Chronic inflammatory diseases. 4-6 cups of green tea per day will help to dramatically reduce the level of oxidative stress that triggers and accompanies most inflammatory and other pathological processes in the body: arthritis, lupus, Crohn's disease, osteoporosis, obesity, aging, problems with conception and gestation.
Prevention of osteoporosis. It has been noticed that in people who prefer green tea, the processes of bone thinning begin much later, fractures occur less often, and recovery from injuries occurs faster.
Recovery after training. The active substances in green tea help the muscles to cope with oxidative stress faster and move on to repair processes.

Is there any harm?

In fact, there are an incredible number of varieties of green tea. And they all differ in shades of infusion, aroma, taste and, of course, price. The most popular green teas are Bilochun (favorite tea of the Chinese nobility), Longjing (has an incredible smell of freshly cut grass), Jasmine Pearl (the most popular green tea in Russia), Yunnan, Maofeng, Taiping Houkui.

When choosing tea, pay attention not to the usual packaged varieties, but to the assortment of tea shops. It is there that you can buy the freshest, truly delicious and healthy teas, learn to distinguish the smallest nuances of taste and aroma. After all, high-quality green tea is not only a health benefit, but also Aesthetic pleasure. Always ask to see tea leaves. Remember, the more whole the tea leaf, the higher its quality. The color of the dry leaf should be light green, emerald, but not dark.

Drink green tea just like that, with milk or honey, enjoy its delicate aroma, get all possible benefit and be healthy!

Video story about the beneficial properties of green tea:

Green tea, like other types of tea, is made from tea bush(tea or camellia sinensis), which is a plant of the genus Camellia families Tea rooms. By the name "Camellia sinensis" one can correctly conclude that the tea bush was first cultivated in China. From there he came to Japan, then the Dutch brought him to the island of Java, the British brought him to the Himalayas. After that, tea spread to India, Ceylon (now Sri Lanka), Indonesia, and South America.

The difference between green tea and its more popular black "brother" lies in the processing of the tea leaf. Let's talk more about how green tea is made.

Green tea production technology

Green tea production technology consists of the following steps: commits (steaming), twisting, drying and sorting.

Fixing (steaming) is steaming the tea leaf at a temperature of 170-180 o C (Japanese method) or roasting the tea leaf in braziers (hemispherical metal boilers), where it is heated to a temperature of 80-90 o C (Chinese method). The purpose of this stage is the inactivation (elimination of activity) of enzymes and the chemical transformations associated with them. Thus, main feature in the production of green tea is that the fermentation process ( oxidative reactions) in it they try to stop, and not to strengthen, as is the case with black tea. Steaming or roasting makes the tea leaf elastic, making it easy to roll. After the moisture content of the tea leaf drops to about 60%, the rolling phase begins.

The purpose of twisting is to crush the tissues of the leaf, after which cell sap is released on its surface.

After the twisting stage, the raw material is sent to the dryer. There, tea acquires an olive-green color, and its humidity does not exceed 5%. Drying is carried out with hot air at a temperature of 95-105 o C.

Sorting is the final stage in the production of green tea, which consists in grouping teas into a homogeneous appearance(leaf tea or broken tea, tea leaf crumbs or tea leaves).

Important constituents of green tea

alkaloids

Green tea has in its chemical composition caffeine, the content of which is higher than in natural coffee. The amount of caffeine directly depends on the correctness of the tea production technology, as well as the initial growing conditions of the tea bush. Green tea also contains theobromine And theophylline.

Polyphenols

Up to 30% of the composition of green tea are polyphenols, in particular catechins, of which the most interesting is epigallocatechin gallate. This tea also contains tannin, the content of which is 2 times higher than in its black counterpart.

Vitamins and minerals

Green tea also contains vitamins (P, C, A, B1, B2, B3, E, etc.) and minerals (calcium, fluorine, iron, iodine, potassium, phosphorus, magnesium, sodium, chromium, manganese, selenium, zinc, etc.).

Benefits of green tea

Green tea has undergone many scientific and medical studies, and to this day continues to arouse interest in its properties, as well as the impact on human health. The results of these studies quite often contradict each other, but in general the following can be said about green tea:

Catechins contained in green tea are actively absorbed by the lens and retina of the eye, resulting in oxidative stress in the eyes(the process of cell damage due to their oxidation) is reduced for up to 20 hours. Hong Kong scientists have concluded that green tea may be promising in preventing glaucoma.
Studies conducted in Slovenia have shown that green tea extract has antimicrobial activity.
Epigallocatechin gallate helps protect brain cells. An experiment conducted at the Israel Institute of Technology on mice showed that this species catechin fights Parkinson's disease and Alzheimer's disease.
Epigallocatechin gallate has been laboratory proven to inhibit the growth of cancer cells in prostate cancer. It is also combined with tamoxifen inhibits the development of breast cancer (an in vivo experiment, i.e. on a living organism was carried out on mice, an in vitro experiment, i.e. in a test tube - on human cells).
Green tea reduces the risk of developing memory and attention disorders by 2 times. The clue to this effect, which has been confirmed in vivo in humans, may lie in the ability of epigallocatechin gallate to pass through the blood-brain barrier.
Green tea extract, containing polyphenols and caffeine, renews thermogenesis(body heat release) and stimulates fat oxidation. As a result, the metabolic rate increases. The number of heartbeats remains the same. Due to these properties, the risk of developing heart disease when drinking green tea is reduced. And this is confirmed by in vivo experience in people who have had an acute myocardial infarction. When drinking green tea, the mortality among such people from a second heart attack decreased by almost 2 times.
By itself, the use of green tea does not reduce the level of cholesterol in the human body (although animal studies have shown the opposite). However, when added to green tea extract theaflavin(a pigment that gives dry tea leaves a characteristic shine) contained in black tea, the level of cholesterol in the human body decreases.
Green tea improves human immunity, and is also an energy stimulator (due to active fat oxidation).
The systematic use of green tea leads to the normalization of human body weight.
With a large amount of antioxidants in its composition, green tea extract prevents skin aging and protects it from ultraviolet radiation.
Despite the lack of scientific evidence that green tea can reduce the risk of developing stomach diseases, as well as help with existing problems associated with them, ethnoscience uses this tea as a remedy for dysentery, indigestion, and also attributes to it the property of eliminating colitis.
Science has not proven that green tea in any way affects respiratory diseases, but traditional medicine says that green tea can treat rhinitis, laryngitis, pharyngitis, stomatitis and conjunctivitis (in the form of rinses and washes). The results of such treatment are unknown.
As far as dentistry is concerned, green tea contains fluoride, so rinsing your teeth and gums with green tea is a preventive measure against cavities.
Thanks to the same catechins that reduce oxidative processes in the muscles, green tea helps keep the muscles of the body in good shape.
Green tea can reduce the risk of contracting HIV. In addition, it is able to stop the development of the disease in the infected. These studies are only in the initial stages and they are all related to the same type of catechin, which is called epigallocatechin gallate.
Green tea lowers systolic and diastolic blood pressure.

Harm of green tea

Excessive consumption of green tea due to its high content of catechins can lead to liver disease. The daily intake of catechins is 500 mg. Many weight loss products are based on green tea extract and contain more than 700 mg of catechins in a single dose, which poses a health risk.

Also, excessive consumption of green tea can cause kidney complications (green tea contains purines and their derivatives). In addition, since green tea somewhat complicates the process of removing uric acid from the body, it is contraindicated in people suffering from rheumatoid arthritis and gout, as well as various diseases of the kidneys and gallbladder.

Green tea should not be consumed by people with increased nervous excitability.

Existing myths about green tea

Green tea tones and soothes. Green tea is either tonic or calming. If you brew green tea for 2 minutes, you will get a tonic drink, which will give us strength. If you brew it for 5 minutes, you get a soothing drink, relieving stress.
Green tea can be stored in a teapot for a day or more. In fact any tea must be drunk for 1 tea ceremony (for 1 reception). For a day, brewed tea will turn into poison, because. the minerals in its composition are completely oxidized.
It is harmful to drink green tea with milk. It is not true. It's just that when you mix tea with milk, the composition of the tea changes. Tannin forms chelate complexes with milk. In this case, tea will simply become less tonic.
Coffee and green tea contain equal amounts of caffeine. This is wrong. Green tea contains large quantity caffeine than any coffee variety. This is partly due to the fact that a large amount of caffeine is lost during the processing of coffee beans.
Green tea has hallucinogenic properties. This is pure fiction. Green tea can tone up, can relax. But it does not contain substances that can cause hallucinations.

Drinking tea is always appropriate, it warms well in the cold season and perfectly quenches thirst in the heat. Properly prepared drink can fight ailments. You should know what effect green tea has on the body - the benefits and harms of the substances that make up the product, when it is necessary to use a fragrant drink, and under what circumstances it is desirable to refuse it, and how to brew tea leaves correctly.

What is green tea

The product is dried leaves of an evergreen shrub, which is grown for industrial needs in China, Japan, India, on the island of Java. Fresh leaves are oval in shape. To obtain green and black tea, the same raw materials are used, but there are differences in the technology of their manufacture. Dried black leaves are obtained after deep fermentation (oxidation).

The green tea production process is distinguished by the use of gentle technology. Steam helps to stop oxidative processes, which are treated with fresh leaves for 2-3 minutes. Then moisture is removed - crumpled and twisted into scales, balls (pearls) or spirals, and then dried until cooked to stabilize the aroma, palatability and useful properties of the product. For elite varieties, the first harvest is used.

Compound

The use of special technology allows you to get a high-quality tea product, which is very diverse. chemical composition:

Among the organic compounds, tannins are released, which affect the taste of the drink. The bouquet of aroma is provided by a combination of essential oils. Alkaloids (theine), catechins (tannin), amino acids have a beneficial effect on health.
The useful microelements included in the composition have a positive effect on life processes: calcium, iron, potassium, zinc, fluorine, phosphorus, iodine, copper.
Tea leaves are rich in vitamins A, C, E, K, P, which improve metabolic processes.

Benefits of green tea

What properties does green tea have - the benefits and harms of the chemical composition of the product for the body? Due to the content of useful components, the unique drink is characterized by the ability to:

Stimulate the process of digestion.
Play the role of a prophylactic in the fight against the formation of dental caries due to the content of fluoride.
have an effect medicinal product- fight cancer, as it is an excellent antioxidant due to the presence of tannins, catechins and tannins. They bind third-party proteins, heavy metals, free radicals and remove them from the body without damaging healthy cells. Vitamin C and zinc reduce the risk of cancer.
Improve the condition of nails, hair, accelerate the healing process of wounds due to the presence of zinc.
stimulate work nervous system. Vitamin P, calcium, phosphorus are necessary for normal brain activity, theine plays the role of a stimulant.
Increase human performance - the product contains caffeine (theine). The caffeine alkaloid is in a bound state with tea tannin, therefore it has a stimulating effect on the body, but milder than caffeine.
Reduce the risk of thyroid disease due to the presence of iodine.
Provide antimicrobial effect. This property is provided by the contained catechins. Tannin promotes healing of ulcers, but tea leaves should be weak.
Remove toxins. Thanks to its cleansing properties, the product increases the body's immunity, reduces the risk of any diseases.
Have a diuretic effect, reduce tissue swelling.
Reduce the risk of developing eye disease due to the content of vitamin A and C.
Maintain normal smooth muscle. This property provides the presence of zinc.
Facilitate the treatment of inflammatory processes due to the content of copper.
Help with toxicosis and seasickness. In these cases, it is recommended to chew dry leaves.
Increase the acidity of the stomach, stimulate the activity of the gastrointestinal tract.

For women

The product is considered a longevity drink. The benefits of green tea for women are as follows:

Prepared masks based on tea leaves or frozen green tea extract perfectly tone the skin of the face, increase its elasticity, tighten and even out the contour well.
As a means of stimulating metabolic processes and cleansing the body, improving the activity of the digestive tract, the aromatic drink promotes weight loss.
The drink can improve general state women in menopause, it is recommended to use it as a prophylactic in the fight against breast cancer.

For men

What are the benefits of green tea for men? The drink contains manganese, which is necessary for the normal functioning of the reproductive system and the musculoskeletal system, with its participation the hormone testosterone is produced. The stimulating effect of caffeine when drinking strong tea helps to increase the efficiency and resistance of the body to stress. The presence of antioxidants make green tea a valuable tool for normalizing blood pressure and preventing prostate cancer.

For the liver

The cleansing properties of the drink with its moderate consumption have a positive effect on the functioning of the liver and gallbladder, vitamins P and C contribute to the improvement of their activity. It should be borne in mind that the product includes polyphenols. With excessive consumption of the drink, significant amounts of these substances can have a destructive effect on the liver.

For the kidneys

The benefits of green tea for the body are achieved by properly brewing the leaves and drinking the drink. It acts as an adsorbent of toxins - removes them from the body and helps cleanse the kidneys. At the same time, the polyphenols contained in tea leaves can harm the kidneys. They promote the formation of purines. This leads to the formation of kidney stones if green tea is abused.

For vessels

Proper use of the drink can improve the condition of cardio-vascular system. These beneficial properties of green tea are provided through the following processes:

Vitamin C thins the blood, facilitates its movement through the vessels and reduces pressure.
Potassium strengthens the heart muscle.
Vitamin P increases vascular tone, and tannins strengthen them. Antioxidants stimulate metabolic processes, prevent the accumulation of harmful cholesterol in the capillaries. All these processes normalize blood pressure, so a cup of tea is useful for the prevention of diseases of the cardiovascular system: atherosclerosis, coronary disease, hypertension.

Is green tea with milk healthy?

Opinions about the usefulness of tea with milk are contradictory. It is believed that with this combination, tea helps the body absorb useful material milk. It is recommended to drink a drink: with depletion of the central nervous system, lactating women to increase lactation. There is an opposite opinion that milk neutralizes useful action tea antioxidants (catechins).

How often can you drink green tea

The benefits and harms of green tea for the body depend on the quality of the product, the method of brewing and the frequency of use. To get the effect of drinking the drink, the following conditions must be observed:

buy a fresh and high-quality product;
you need to brew tea leaves with clean water, heated to 60-90 degrees;
do not drink a cup of tea on an empty stomach and in the evening;
do not combine the use of drink and alcohol;
do not take medication;
do not drink too strong or hot drink.

Harm of green tea

Do I need to drink green tea often - what benefits and harms will regular use of a strong drink bring? The product becomes useful only with moderate use. It should be remembered:

that the drink has a stimulating effect and can be harmful when cardiovascular diseases(increase pressure, change heart rate);
abuse of the product leads to a decrease in density bone tissue and causes brittle bones;

Contraindications

Those wishing to enjoy a fragrant drink should be aware of the presence of contraindications to the use of strong tea:

increased excitability, insomnia;
tachycardia;
chronic diseases of the kidneys, liver;
diseases of the stomach (increased acidity);
peptic ulcer in the acute stage;
atherosclerosis, hypertension;
period of pregnancy.