Tea or coffee: what is better to drink, benefits and harms, than to replace it

What properties, besides invigorating, does coffee have? Is it possible to have coffee at night, before training, tests, ultrasound, or during fasting? Can your heart, kidneys, liver, stomach, or head hurt because of coffee?

Coffee is a favorite aromatic drink with a pleasant bitter taste. It tones, helps to wake up, and energizes. What can I say, it’s nice to chat with family and friends over a cup of coffee in the morning. Those who only occasionally treat themselves to a cup of coffee or sit heavily on it should know what specific effect the drink has on the body.

Is it true that coffee makes you grow old?

How does coffee affect the aging process of the body? There is no clear answer to this.

According to one opinion, coffee lovers, that is, people who constantly drink more than 2 cups of an invigorating drink a day, cause inexorable damage to their own youth. The fact is that coffee accelerates metabolic processes in the body, creates a load on the kidneys, has a diuretic property and helps remove fluid from the body. As is known, dehydration, electrolyte imbalance, and slowdown of regenerative processes lead to aging. The skin becomes dry, dull, loses elasticity, and sags. Wrinkles appear on it. The condition of hair and nails also worsens. The entire body as a whole wears out faster.
There is also another opinion, different from the first one, according to which coffee is recognized as a miraculous anti-aging drink due to its antioxidant properties. Coffee prevents the destruction of cells due to the effect of oxygen free radicals on them, which allows you to maintain youth and health.

IMPORTANT: If you want to look young, you don’t have to give up your favorite coffee. Drink 1-2 cups of drink per day. To compensate for fluid loss, it is recommended to drink 2 glasses of mineral water after each cup.

Abuse of coffee leads to aging of the body.

Benefits and harm to the body

Which of these drinks is better for a healthy lifestyle? First of all, it is worth determining their benefits for the body as a whole and possible harm.

What invigorates better: tea or coffee? Both drinks contain caffeine, which gives a feeling of vigor, but its percentage differs depending on the type and method of preparation. Coffee undoubtedly contains more caffeine than green tea, but the effect of this energy source on the body smooths out the difference: coffee acts faster and in less time (about 2-3 hours), tea saturates the body less strongly, but for 5-6 hours. Judging by the duration of the energy effect, green tea has an advantage over coffee. So what are the actual benefits of coffee and tea?

Benefits of coffee

The benefits and harms of coffee

Coffee contains antioxidants and phenolic compounds, which play an important role in cancer prevention;
Reduces the risk of diabetes;
Useful for weight loss: accelerates metabolic processes and reduces appetite;
Stimulates the nervous system, which gives a feeling of vigor.

Harm from coffee

Should not be used by older people: it contributes to impaired cognitive processes and accelerates bone loss;
It is forbidden to drink caffeine if you have high or high blood pressure;
Excessive consumption depletes nerve cells and leads to general fatigue and lethargy of the body;
It is not recommended to abuse it by pregnant women;
You should not drink hot drinks due to the risk of developing esophageal cancer - this also applies to tea and other drinks whose temperature is above 65 degrees Celsius;
Can weaken or enhance the effect of drugs.

Drinking coffee has more harmful effects on the body than it benefits. But if it’s so difficult to give up your favorite drink, then you should be careful with the dose: no more than 400 mg. With prolonged use, it becomes addictive and people can no longer wake up without a cup of coffee in the morning.

Benefits of tea

Dependence of the degree of brewing on the type of tea

As for tea, it has the following beneficial properties:

Has a positive effect on the body thanks to essential oils, tannins and minerals;
Clears blood vessels of accumulated cholesterol;
Supply the brain with oxygen and accelerate mental activity;
Antioxidants protect cells from rapid aging;
Herbal tea is used to treat gastrointestinal diseases;
Helps with intoxication, so with a hangover it is better to drink tea rather than coffee.

Despite all its benefits, tea also has a number of contraindications and can harm the body if consumed incorrectly.

Harm of tea

Too strong tea is harmful to the stomach and nervous system;
You should not drink tea on an empty stomach, especially for people with diseases of the digestive system;
It has a diuretic effect - fluid is removed from the body too quickly. The result is dehydration and leaching of minerals from cells;
It is worth choosing high-quality products and you should not consume tea after the expiration date; over time and if stored improperly, aflatoxins are produced - toxic substances appear on the leaves.

So what is healthier – tea or coffee? According to its characteristics, tea is healthier than coffee. It has a better effect on a person’s health and well-being than coffee, but what should those who can’t give up coffee or don’t like tea do? In addition, like coffee, tea also contains addictive substances.

After prolonged use, especially in the morning for a boost of energy, the body is no longer able to do without doping. And this leads to a number of problems. The main problem is product quality. If you can visually determine the quality of coffee, then tea leaves are difficult to classify, and this gives ample opportunities to sell anything under the guise of tea.

Is it possible to drink coffee before taking urine, blood, hCG, biochemistry and other tests?

Laboratory tests of urine and blood help to determine any specific disease, and also determine the condition of individual body systems and the entire body as a whole. In order for the analyzes to be informative and truthful, you need to prepare for them very carefully. For those who do not know exactly how, it is better to consult a doctor. An important place in this preparation is occupied by nutritional adjustments at least three days before the analysis. Of course, we are talking about a planned donation, and not about one that is carried out during emergency hospitalization. So, on the eve of a urine test, a clinic and blood biochemistry, as well as a test for sugar and hormones, it is recommended to give up coffee. Some doctors urge you not to drink it 12 hours before the test, others - 24 hours.

You should not drink coffee before taking blood and urine tests.

A tonic drink affects many vital signs of the body:

due to stimulation of diuresis, the color of urine becomes lighter
the content of calcium salts, as well as magnesium, citrates and other substances increases in the urine
blood sugar levels increase
the blood gets thicker
changes hormonal levels (affects the functioning of the pituitary gland, thyroid gland, adrenal glands, gonads)

IMPORTANT: Coffee does not affect the results of serological blood tests (blood type, HIV, syphilis, etc.).

How to replace coffee and tea?

Bubble tea

In pursuit of unusual types of coffee or tea, most people forget about ordinary water. Our body needs 1.5 liters of clean water to function. Other drinks do not count. Dehydration can be one of the reasons for fatigue, inability to concentrate and other problems.

There are many drinks that also have a tonic effect, but are also safe for health.

Chicory is considered the main coffee substitute

High-quality chicory is tasty and healthy; it contains insulin, which has a beneficial effect on the body: cleanses the body of toxins, regulates blood sugar and saturates it with vitamins and minerals.

Hibiscus tea

Delicious sour drink. Wonderfully tones and cleanses the body. Anyone can drink in unlimited quantities, except people with high stomach acidity.

Mint

It has both a tonic and relaxing effect at the same time. Unlike coffee and tea, it invigorates not due to caffeine (but due to menthol), which retains the effect for a long time. Has no contraindications. In addition to general cleansing of the body, it improves digestion. A cup of mint tea in the morning will do more for your health and vigor than the same tea and coffee.

Ginger tea

Ginger itself is a source of energy and nutrients. It can be added to other drinks or made into tea from grated or chopped fresh ginger - any of these methods have a beneficial effect on well-being.

Lemon water

Tones with vitamin C, improves complexion and lifts your mood. For people with gastrointestinal problems, they came up with a solution in the form of a spoon of honey - it softens the taste and effect on the stomach.

By gradually eliminating tea and coffee from your life and replacing it with worthy alternatives, you will notice that you don’t have to pour liters of caffeine into yourself in the morning to feel alert and full of energy. Find your drink, create an individual recipe for a healthy dope and your body will thank you.

Can I drink coffee before surgery?

It is necessary to drink water, carbonated and non-carbonated drinks, including coffee, no later than 2-3 hours before surgery under general anesthesia. You can drink coffee with milk, which contains animal protein, for the last time 6-8 hours before surgery. This prohibition is explained by the fact that under the influence of central anesthetics, the muscles of the surgical patient relax, and the brain loses control over many vital functions, including swallowing. If the liquid drunk before surgery does not have time to be absorbed and remains in the stomach, it may be released into the respiratory tract, causing the patient to suffocate.

IMPORTANT: Is it worth drinking coffee on the eve of surgery at all? American scientists today are inclined to believe that a cup of aromatic invigorating drink without sugar and milk a couple of hours before the invasion will not only not hurt, but will also be beneficial. Especially for those patients who have a caffeine addiction. Lack of caffeine after surgery under anesthesia is fraught with headaches and increased melancholy syndrome

Research: does coffee retain fluid in the body?

In fact, there are very few good research papers on this topic, so there are no serious statistics.

In 1928, a study was conducted with the participation of three men who drank either coffee, then only tea, then pure water, then water with caffeine. All this time, their urine levels were measured. Practice has shown that with regular consumption of tea or coffee, the volume of urine remains at the usual level, and after the subjects abstained from coffee for a long time and then drank it, the amount of urine increased.

The Connecticut Institute study followed 15 volunteers and found that when they drank small amounts of coffee on a regular basis, their urine volume was the same as before. But if you drink a lot, a large amount of sodium enters the kidneys, it is excreted through urine, in this case more fluid is released.

Another study conducted in Birmingham involved men, some of whom drank 4 cups of coffee a day, and some of whom only drank water. Not only the volume of urine was measured, but also the function of the kidneys and the condition of the entire body. The study found that men who drank coffee were no more dehydrated than those who drank only water.

Research has not shown a definitive verdict. Sometimes coffee can be a diuretic, but generally it does not cause severe dehydration in small doses.

Is it possible to drink coffee before an ultrasound of organs and kidneys?

Before performing an ultrasound of the kidneys and abdominal organs, the doctor should advise the patient about what preparation he needs to make for the study. One of the important points of this preparation is diet.

Three days before the procedure, the patient should exclude from the diet foods that increase gas formation in the intestines. Due to flatulence, internal organs are less visualized, which prevents the doctor from conducting an accurate examination.
So, before an ultrasound you should not eat: legumes, peas, beans, corn, raw vegetables and fruits, cabbage in any form, milk and fatty dairy products, any kefir, sugar, sweets, fried and fatty foods.
Some drinks are also prohibited: alcohol, soda, tea with milk, black coffee and milk.
The ultrasound examination itself is performed on an empty stomach. Sometimes the doctor asks the patient to fill their bladder. But not coffee or tea, but 500 ml of still mineral water.

IMPORTANT: To obtain objective results of an ultrasound examination, you should avoid coffee for 3 days.

For three days preceding an ultrasound scan of the kidneys and abdominal organs, coffee is excluded from the diet.

Coffee: diuretic or not?

The debate about the diuretic effect of coffee has lasted for many decades. Ordinary people think that it is, since many have noticed the urge to urinate more frequently after drinking a cup of coffee.

Scientists who are inclined to research everything are not so clear, and say that there is some effect, but not for everyone, and when drinking a certain amount of coffee.

Is coffee a diuretic, and how exactly does this mechanism work? Should you use coffee as a diuretic? Which coffee has a stronger effect?

The mechanism of the diuretic effect of coffee

The amount of drink consumed and the diuretic effect are closely related, and the relationship is inversely proportional. The more cups of coffee you drink per day, the less diuretic the effect will be.

2 cups of coffee a day has a fairly strong diuretic effect. Blood circulation in the kidneys and in the body as a whole increases, intercellular metabolism and the rate of blood filtration accelerate. Due to this, the amount of urine increases, and it is quickly eliminated from the body by the kidneys.
More than 3 cups a day will have the opposite effect. In coffee drinkers, the body becomes less sensitive to caffeine, and therefore even the first morning cups do not have such a strong effect on diuresis. Vascular walls no longer react to caffeine in the same way, and its excess leads to the opposite effect: fluid in the body begins to accumulate, and swelling may appear.

It is recommended to drink no more than 2-3 cups of coffee per day. This way the water will be removed and the body will be cleansed.

Research and experiments with coffee: diuretic or not?

There have been no serious long-term studies in this area, so it is impossible to compare the effects of caffeine on diuresis over long-term use, but two interesting experiments have been conducted.

Coffee lovers were asked to first give up their favorite drink for one day, control the amount of urine, and drink a large cup of coffee in the evening. In this case there was more urine.
In the second experiment, scientists asked volunteers to drink different volumes of this drink: cups of 45, 90, 180 and 360 ml were offered. When consuming small volumes, up to 180 grams inclusive, the amount of urine remained almost unchanged. When consuming 360 ml, the volume of urine excreted was noticeably greater.

Of course, the research is flawed. The amount of urine was measured compared to the usual consumption of water or other drinks. But coffee also contains water.

And it is natural that more fluid enters the body, which means more will be excreted. Perhaps it would be worth checking what would happen if some people drank 360 ml of coffee, and another - the same amount of water.

Scientists still have a lot of research ahead, perhaps someday we will definitely know the pattern.

There are people who are hypersensitive to caffeine. For such people, even after drinking a small cup of coffee, within 10-15 minutes there is a strong diuretic effect, the urge to urinate, although not much urine is released. This is a personal characteristic of a person.

Which coffee is a diuretic?

Not all types of coffee are created equal, and not all have the same diuretic effect. Let's consider other options compared to natural black.

Decaffeinated coffee still contains caffeine, albeit in minimal concentration. And in addition - acids, antioxidants, etc., which also affect the urinary system. This means that decaffeinated coffee will also have a diuretic effect. The only people who will benefit from it are people with hypersensitivity to caffeine, for whom a cup of coffee causes a diuretic effect within the next 15 minutes. People should try decaffeinated drinks to see how their body reacts.
Instant coffee . It causes exactly the same effect as the natural one, only it adds almost no beneficial substances, and in the long term it can worsen kidney function. It contains a lot of chemical additives and artificial compounds, and if you consume a lot of it, the kidneys begin to filter urine worse.
Coffee with milk . It causes a slightly lesser effect, since caffeine binds to milk and is processed (and therefore eliminated) more slowly. But you need to keep in mind that this applies to the same servings of espresso or Americano with milk, and not huge cups of latte or cappuccino. After drinking 350-400 ml, as is often served in a cafe, or poured into a large mug, you will quickly notice the urge to urinate, simply because a lot of liquid has entered the body.

Can coffee be used as a diuretic?

Sometimes people who want to lose weight believe that they need to get rid of excess fluid in the body. And they choose coffee for this. But you need to understand that in addition to caffeine, beans contain a large amount of natural acids, minerals, active substances, and in such concentrations they are definitely not beneficial for the body, and can even cause fluid stagnation.

Doctors definitely do not recommend using coffee as a diuretic on an ongoing basis.

In one-time cases, this is acceptable, for example, when before an examination you need to fill the bladder faster, but drinking 5-7 cups every day to cause increased urine output is not recommended. Use herbs or medications recommended by a specialist.

A stronger diuretic effect is observed in those who do not drink coffee daily. For coffee lovers it is much weaker.

Conclusions:

Coffee can be a diuretic. Sometimes it causes increased urination within 10-15 minutes after consumption.
The less often a person drinks coffee, the more pronounced the diuretic effect. It decreases among coffee drinkers.
Different types of coffee (decaf, milk, instant) have similar effects, and there is no point in choosing a lesser diuretic.
The diuretic effect is clearly visible when drinking large volumes of the drink - more than 360 ml; it is rarely noticeable from a cup of espresso, although it also depends on the strength of the coffee.
Coffee should not be used as a diuretic on an ongoing basis to remove fluid from the body.

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Can coffee cause heartburn? Can coffee make you sick or sick?

Coffee can make you sick if:

Drink it on an empty stomach. The drink stimulates the production of gastric juice and disrupts the process of protein breakdown in the stomach. As a result, bloating, gastritis, and inflammatory bowel diseases may develop. The person may feel nauseous.
Drink poor quality coffee. “3-in-1” drinks with synthetic additives are especially harmful.
A person has high blood pressure. Excessive coffee consumption can provoke a surge in blood pressure, accompanied by nausea, dizziness and tinnitus.

IMPORTANT: Excess hydrochloric acid due to drinking coffee on an empty stomach can cause heartburn.

Can coffee make you sick and dizzy?

The causes of headaches and dizziness after coffee are:

Overwork. If a person is tired and tries to stimulate himself with a cup of strong coffee, the body may respond with an overexertion headache.
Constriction of blood vessels in the brain. Caffeine in large quantities can lead to vascular spasm, which causes headaches.
Hypertension. On average, a cup of coffee increases blood pressure by 10 mmHg. Imperceptible to a healthy person. But for a hypertensive patient, such a surge in pressure is fraught with headache, dizziness and nausea.
Increased blood sugar levels. Then the body spends enormous energy on producing insulin, and as a result it overexerts itself. After several cups of coffee, a person may get a headache.
Withdrawal syndrome. For caffeine-dependent people, headaches and dizziness may occur 6-12 hours after drinking a cup of coffee, when the caffeine wears off.

IMPORTANT: Meanwhile, a cup of coffee is an excellent remedy for migraines.

The mechanism of the diuretic effect of coffee

2 cups of coffee a day has a fairly strong diuretic effect. Blood circulation in the kidneys and in the body as a whole increases, intercellular metabolism and the rate of blood filtration accelerate. Due to this, the amount of urine increases, and it is quickly eliminated from the body by the kidneys.
More than 3 cups a day will have the opposite effect. In coffee drinkers, the body becomes less sensitive to caffeine, and therefore even the first morning cups do not have such a strong effect on diuresis. Vascular walls no longer react to caffeine in the same way, and its excess leads to the opposite effect: fluid in the body begins to accumulate, and swelling may appear.

It is recommended to drink no more than 2-3 cups of coffee per day. This way the water will be removed and the body will be cleansed.

Can your kidneys and liver hurt from coffee?

Coffee removes fluid from the body, thereby overloading the kidneys. Their inflammation may occur - pyelonephritis. And in combination with milk, this drink leads to the formation of insoluble substances that are deposited in the kidneys by sand and stones.

The tonic drink affects the liver in two ways:

on the one hand, coffee protects the liver from the effects of ethanol contained in alcoholic beverages and fatty deposits
on the other hand, freeze-dried coffee leads to the destruction of hepatocytes, and in combination with fatty foods and alcohol turns into a real poison for the liver

Is coffee a diuretic or not?

Coffee is one of the most popular drinks on the planet, helping to increase efficiency, activate brain activity, and get rid of drowsiness and fatigue.
The use of the product, in addition to increasing tone, has a concomitant effect on the functioning of the body's systems, in particular, it produces a diuretic effect.

The effect of the drink is determined by the quality, type, volume of daily consumption, caffeine concentration, and the presence or absence of additional components.

The mechanism of coffee's effect on urine output

Substances included in the composition of consumed coffee provoke a narrowing of the renal vessels, filtration processes are accelerated, and the volume of urine excreted per unit time increases.

The components of the product have the ability to attract water: its content in the vessels increases. This leads to increased functioning of the kidneys, which are responsible for removing fluid from the body.

How does the drink affect the functioning of the body?

One or two cups of the drink consumed throughout the day have a diuretic effect due to the activation of blood circulation, intercellular metabolism, the rate of blood filtration and urine production.

If you consume more than three cups of drink daily:

The body's sensitivity to caffeine decreases (an “addictive effect” is observed), the walls of blood vessels become less susceptible to this substance.
There is an increase in swelling from the accumulation of fluid in the tissues.
Manifestations of anxiety, restlessness, nervousness, and fear become more frequent.
Hypertensive symptoms, tachycardia, nausea, and dizziness are detected.
It is difficult to pass stool (coffee “pulls” liquid from the digestive tract).
The removal (“washing out”) of microelements and other beneficial substances from the body is accelerated.
Energy reserves are depleted, and the opposite (relative to the expected) effect is discovered.

It is advisable to drink no more than 2-3 cups of the drink during the day (for example, one serving in the morning, one in the afternoon). This will ensure the entry of biological stimulants into the tissues, removal of fluid, and cleansing of the body.

The characteristics of the body are important. If you are hypersensitive, one cup of the drink after 15 minutes gives a diuretic effect. When assessing the effect of a product, one should take into account the condition of the liver, brain, blood vessels, heart, amount of water in the body, predisposition to hypertension or hypotension.

Source: https://urologia.expert/mochevoj-puzyr-i-uretra/kofe-mochegonnoe-ili-net

Can there be swelling of the legs, arms, face from coffee?

Since coffee does not retain fluid in the body, but removes it, swelling cannot actually occur from it. But swelling of the legs, arms and face can be a symptom of impaired venous drainage or heart disease caused by the abuse of caffeinated drinks.

Coffee itself does not cause swelling.

Does coffee help get rid of swelling?

Ph.D., cardiologist Anton RODIONOV.

The most common myths and popular methods of dealing with this not at all harmless phenomenon are analyzed by our expert - Ph.D., cardiologist Anton RODIONOV

Myth 1. Those who drink a lot of water and eat salty foods become bloated.

This is not entirely true. In fact, there are people who, without any damage to their health and appearance, can drink 3 - 5 liters of liquid a day, while for others, due to an extra couple of glasses of water, their arms and legs swell.

By the way, it is not entirely true that edema occurs from excess salty food - this is not the cause, but only a provoking factor.

The most important thing you need to know: a healthy person should not have edema. Excess salt is excreted by the kidneys and is not retained in the body. The same goes for water - liquid is removed from the body and is not retained in the tissues.

Therefore, the appearance of edema is always a sign of trouble in the body and a reason to consult a doctor.

IMPORTANT!

On average, a person consumes 1.5 - 2 liters of water per day. This does not mean that you need to drink 8 glasses of liquid. A significant portion of water enters the body with food.

It is recommended that a healthy person consume no more than 8 g of salt per day; those suffering from cardiovascular diseases - no more than 5 g. Cardiologists recommend, especially for hypertensive patients, to cook food with a small amount of salt and not to add salt after cooking.

Myth 2. The most common cause of edema is diseased kidneys.

Nothing like this!

Most often, people suffer from swelling of the legs, the reason for this is peripheral venous insufficiency due to disturbances in the venous valve system of the legs. Blood cannot return completely to the heart and stagnates in the veins.

In second place are edema due to chronic heart failure and other cardiovascular diseases.

In such cases, doctors recommend limiting salt intake, because excess sodium in the blood leads to fluid retention and increased blood pressure. The load on the heart increases, blood “stagnates” in the body, and swelling occurs.

Kidney diseases (nephritis, diabetes and others) are in third place among the common causes of edema. By the way, it is renal edema that most often “imprints” on the face. Therefore, if swelling on the face, in particular in the eye area, occurs frequently, then tea compresses or all kinds of cosmetic masks will not help, you need to check your kidneys.

Myth 3. Diuretic teas are the simplest and safest remedy for edema

This is absolutely not true! Any independent attempts to regulate the volume of fluid in the body can lead to complications - heart rhythm disturbances, convulsions. Therefore, before taking diuretics, dietary supplements or traditional medicinal diuretics (diuretics), it makes sense to consult a doctor.

Myth 4. Parsley removes excess water from the body

Indeed, there are foods and drinks that contain a lot of potassium and phytochemicals and affect the restoration of the correct sodium-water balance in the body.

Popular rumor ascribes such properties to black or green tea, chamomile tea with lemon juice, fresh cucumbers, asparagus, celery, eggplant, and seasonings - parsley, coriander, cardamom.

However, in fact, the importance of the listed products is greatly exaggerated.

In fact, cranberry and lingonberry juice have a diuretic effect, as well as, oddly enough, coffee (without harm to health, 1 - 2 coffee cups per day).

Advice on topic

Half an hour into shoulder-deep water and you’ll be like a cucumber!

The most unpleasant and painful thing is leg swelling due to peripheral venous insufficiency. There are several effective ways to remove it:

lymphatic drainage massage - reduces swelling by removing excess fluid from tissues;

elastic bandaging and special knitwear (socks, stockings) prevent fluid stagnation;

raise swollen feet above the level of the heart - the elevated position of the legs promotes the outflow of blood;

immerse yourself in water up to your shoulders for half an hour or 30 minutes and do water aerobics - in water the influence of gravity weakens and the blood does not stagnate in the veins;

Walk for at least 45-60 minutes a day - contraction of the leg muscles is a kind of “pump” that squeezes blood out of the veins of the lower extremities, reducing venous stagnation.

Can coffee cause acne?

The caffeine contained in coffee has an invigorating effect on the body by stimulating the production of the hormone cortisol.
An excess of this hormone causes increased oiliness of the skin.
Sebum is a favorable environment for bacteria, which cause inflammation and acne.

IMPORTANT: The body also reacts with acne to the chemicals contained in instant coffee bags.

A person who abuses coffee may develop acne and begin to lose hair.

Types and properties

Those who like to treat themselves to pleasant and tasty Arabica or Robusta should know that coffee is a diuretic and the presence of the active substance in ground and instant drinks is approximately the same, as is the diuretic property.

You need to figure out, depending on the type, which one is better and healthier?

Ground varieties are an excellent natural diuretic, rich in vitamins and minerals, but are not recommended for use at night as they have a stimulating effect. It is necessary to drink additional fluids to prevent dehydration.
The instant and granulated form of coffee is also a diuretic of natural origin. The composition contains microelements that have a beneficial effect on the body.
Adding cream or milk to coffee weakens the effect of the stimulant, but does not affect the diuretic characteristics.
Without the active ingredient (decaffeinated) it has no diuretic effect and is not suitable as a diuretic.

Can coffee cause allergies?

Coffee contains chlorogenic acid, a strong allergen. A reaction to the drink can appear from the first cup or cumulatively (gradual allergization of the body), as well as against the background of an acute illness, taking antibiotics, or exposure to other allergens.

Most often, coffee causes skin allergies (rash with itching, redness of the skin), less often respiratory allergies (sneezing, coughing, rhinitis) and digestive allergies (flatulence, diarrhea).

The diagnosis is confirmed by an allergy test. Allergy sufferers will need to give up coffee and relieve the condition by taking antihistamines and symptomatic medications.

Allergy to coffee.

Is it possible to drink coffee before bed?

Coffee affects a person's sleep because:

Contains caffeine. This substance has an invigorating effect on the brain and the body as a whole. A person who drinks coffee occasionally will find it difficult to fall asleep because of a cup of drink. An experienced coffee drinker who has become addicted to caffeine will not encounter problems with sleep.
Diuretic effect. After coffee, you may want to go to the toilet “in a small way”, which will prevent you from falling asleep or wake you up at night.
Stimulation of gastric juice production. The desire to eat after coffee will also prevent you from getting a good night's sleep.

Therefore, it is recommended to drink coffee no later than 2-3 hours before going to bed.

Drinking coffee before bed can cause insomnia.

Coffee as a diuretic

The use of this plant began many centuries ago, and since then coffee has been entrenched in the cultures and traditions of various peoples. And only with the serious development of medicine over the past few decades, scientists began to be interested in the presence of a diuretic effect in coffee. They have long noticed that after drinking the drink, blood pressure increases, and recent studies prove that it acts as a stimulator of the walls of blood vessels, which is why they become toned. At the same time, coffee beans contain caffeine, which intensely activates the metabolic process, which explains the natural diuretic effect on the body.

Is it possible to drink coffee before training?

Since coffee charges you with energy and gives you strength, many people think that after a cup of drink their endurance during training will increase. But this is not true:

at “high speeds” the body quickly becomes exhausted
coffee and physical activity combined create too much stress on the cardiovascular system; tachycardia and increased blood pressure will interfere with training
During training after coffee, the body will lose too much fluid

IMPORTANT: You need to drink coffee 3 hours before or 2 hours after training.

Is it possible to drink coffee before an exam?

A portion of a caffeinated drink before an exam will help you be collected and concentrated, resulting in a good result. But a sleepless night and 5-7 cups of coffee will not lead to anything good: the examinee will come to the teacher with a headache, nervous and physical exhaustion.

A cup of coffee the morning before an exam won't hurt.