Coffee: the benefits and harm to health

Update: February 2019

The discussion about whether it is useful or harmful to drink coffee goes every day
For several decades now:

  • Some scientists, probably paid by coffee companies,
    утверждают, что кофе как минимум безвредно, а местами даже atносит
    benefit to the body (reduces the risk of stroke, diabetes, cirrhosis of the liver,
    the occurrence of depression, the formation of kidney stones, etc.).
  • Others, who are at the satisfaction of competitors (manufacturers
    чая или соков, наatмер), говорят о страшной разрушительности
    This drink for our health.

There is no end to this dispute, since coffee, unlike
energy products, the product is natural, therefore, it may be as
useful and harmful. Можно atвести аналогию с помидором.
This fruit is tasty and healthy, but in patients with gout it can
cause exacerbation of the disease, and if you eat a few pounds
tomatoes at a time, and you can get poisoned. About coffee, the benefits and harm for
здоровья человека at наличии каких-либо заболеваний поговорим в

Let’s start with the definition of concepts

Кофе – это напиток, atготовленный путем заваривания в турке
(Cezve) or coffee maker of roasted and then ground beans
coffee tree. It is this kind of coffee that we will discuss further.
Instant coffee is a separate topic for conversation, but we too

Natural coffee is not a food product, as in this
The drink contains very little protein, fat and carbohydrates. However, in
кофе, кроме всем известного кофеина, atсутствуют до 30
biologically active substances. Among them are: potassium, magnesium, calcium,
phosphorus, vitamin PP, vitamin B2, organic acids, theophylline and

On the effect on the nervous system

Caffeine contained in coffee is natural
психо-стимулятором, увеличивая активность головного мозга atмерно
on 10%. Points for and against:



  • Increases attention and speed of reaction of drivers, allows not
    fall asleep at the wheel.
  • Increases resistance to stress and performance.
  • Increases the content of serotonin in the brain (“happiness hormone”),
    что at регулярном употреблении улучшает настроение и может
    relieve depression (see antidepressants)
  • Relieves headaches – a scientifically proven fact.
    The only exception is headaches caused by increased
    blood pressure. In other cases, a cup of coffee – the most
    safe remedy for this scourge.
  • Causes addiction similar to alcohol or
  • Злоупотребление кофеином atводит к нервному истощению, за
    followed by irritability, nervousness, lethargy, sharp
    decrease in working capacity.
  • Large doses of caffeine, especially at night, can cause
    insomnia (see how to fall asleep quickly).


This substance in coffee accelerates blood circulation in
organs and has bronchodilator properties (relieves spasm



  • Due to improved blood circulation in the kidneys diuresis increases
    (daily amount of urine). Therefore, coffee has a positive effect on people.
    with edematous syndrome of any origin.
  • Reduces shortness of breath in patients with broncho-obstructive
    syndrome (chronic bronchitis, obstructive bronchitis, asthma).
In perfectly healthy people, coffee abuse can cause
dehydration due to the diuretic effect of theophylline.

On the effect on the digestive system

Coffee stimulates the secretion of digestive juices. For healthy
people is not dangerous, but in patients with a stomach ulcer, gastritis or
панкреатитом это может atвести к неatятностям.

There is evidence that regular consumption of coffee reduces
the risk of cirrhosis in alcohol abusers.

Кофе в больших количествах содержит танины, вещества, atдающие
This drink has a bitter taste. Tannins have a positive effect on metabolism.
Some vitamins, such as “PP” and “C”, however, may violate
всасывание некоторых микроэлементов, наatмер, железа, что следует
consider patients with anemia. In addition, these substances have
tannic properties. This effect in the medicine of the past
used in the treatment of stomach ulcers.

Tannins in coffee are neutralized by the addition of milk to it.

As you can see, the influence of the described drink on the “yazvennikov” is very
contradictory. On the one hand, a cup of coffee in such patients may
cause heartburn or abdominal pain, and on the other – contribute to
ulcer healing. However, the view of modern gastroenterology at
кофе скорее негативный — at обострении язвенной болезни желудка
or duodenal ulcers coffee is contraindicated.

On the effect on the cardiovascular system

The impact of the beverage we are discussing on health is very bright.
affects the state of the heart and blood vessels. Withчем влияние это
caused not only caffeine, but the rest of the complex included in
him substances.

Caffeine increases heart rate, causing
tachycardia (an increase in the number of heart beats per minute above normal).
For a young, healthy body is not terrible, but for athletes
даже хорошо, так как atводит к увеличению atтока крови к тканям,
which somewhat improves athletic performance.

But in sick people tachycardia can cause life-threatening

  • In hypertension, to provoke hypertensive
  • With heart failure – significant deterioration
    conditions due to the increased need of the heart muscle in
  • In ischemic disease – cause a heart attack up to
    heart attack.
  • An overdose of caffeine can cause heart failure.
    arrhythmias, which increases the risk of sudden death by 2 – 3 times.
    (WHO definition. Sudden cardiac death is unexpected,
    unforeseen death of cardiac etiology that occurred with
    Witnesses in a short period of time, no more than 1-6 hours
    from the beginning of the first signs of the disease, in a person without
    conditions that currently could be fatal).

Some more facts about the benefits of coffee

What could motivate us to drink one or more cups

  • Regular consumption of even one cup of coffee a day can
    reduce the risk of cardiovascular death (stroke, heart attack,
    fatal blockage of an important vessel) by 24%. Proved by joint
    research scientists from madrid and harvard.
  • There are scientific data that state that
    coffee consumption can reduce the risk of disease
    Alzheimer’s or Parkinson’s, with the risk of Parkinson’s disease coffee
    reduces by 500%.
  • Coffee reduces the activity of microorganisms that cause caries.
    However, to reduce the risk of caries, you need to drink this drink without
  • Coffee can help reduce some of the symptoms of allergies, so
    How to reduce the formation of histamine in the body (see tablets from

Interesting fact: the study showed that the best selection
antioxidants and caffeine is obtained by brewing coffee at
room temperature (see do not brew coffee with boiling water).

Some more facts about the dangers of coffee for health

When, and for what reasons, should avoid drinking coffee.

  • Pregnant coffee should be drunk very carefully. Use
    four or more cups a day increases the risk of abortion
    by 33%. However, 1–3 cups per day reduces the likelihood
    intrauterine death of the fetus by 3%.
  • In menopausal women, 4 or more cups per day increase the risk
  • The abuse of coffee increases the blood levels of the total and
    LDL-cholesterol (“bad cholesterol”), which contributes
    progression of atherosclerosis.

About false accusations and unwarranted hopes

Both critics and coffee lovers in their enthusiasm come
too far and sometimes attributed to this drink certain
harmful / beneficial properties that are not.

  • Antioxidant – coffee contains some
    antioxidants that protect our body from stress. True to
    get some significant antioxidant effect, you need not drink
    less than 5 cups a day, so consider it as an antioxidant not
    worth it.
  • Carcinogens when roasting – when roasting coffee beans in it
    benzpyrene resins appear to be carcinogenic.
    The deeper the cooking, the more tar. But the grain itself, as whole,
    so we do not grind inward, and in the resulting drink they are
    concentration is negligible. All benzpyrene remains in the cup or
    coffee maker, so this harm is very ephemeral, of course, if you
    do not drink coffee with the coffee grounds (see in which products and
    why a lot of dangerous carcinogen – acrylamide).

About instant coffee

Natural coffee can not be soluble, so as not to say
to you about this. Instant coffee making technology
was discovered at the end of the century. However, the first bank of this product
first off the assembly line of the company Nestle in July 1938.

Why is instant coffee not useful?

  • Firstly, instant coffee is made not from expensive Arabica, but
    from cheap robusta. Coffee is also used as a raw material.
    dust, refried and substandard grains, and other waste
    coffee production. All this is ground and processed
    boiling water under great pressure. The resulting extract is filtered,
    dried and then sprayed in special chambers. With
    spraying a drop of the extract freezes, turning into a powder. This and
    have instant coffee.
  • Secondly, most nutrients are destroyed in the process.
    manufacturing. Therefore, to provide the required taste and aroma
    instant coffee add chicory, acorns, and
    various dyes, flavors, stabilizers, etc.
    the cheaper the product, the more of them. Normal coffee content
    soluble coffee powder 15%, what is the rest?
  • Third, caffeine, unlike other active substances,
    perfectly carries all the technological stages, so it is more in
    soluble drink (80 g per cup) than in natural (60 mg per
    a cup).

Why is decaf instant coffee not useful?

At the beginning of the two thousandth doctors actively began to curse caffeine.
Consequently, people became interested in beskofeinovym drinks.
Demand spawned supply, decaffeinated coffee on the market has become
appear more and more. Decaffeinate can only green
coffee beans. They are treated with a special solvent, the name
which is ethyl acetate. This substance is also used. at
manufacture of stains for insects and artificial skin.
Manufacturers say they thoroughly launder their product from
ethyl acetate, but where is the guarantee?


As can be seen from the above, the harm to coffee is mainly caused by excessive
use this drink. One or two cups of coffee a day will improve
настроение и atдадут вашему телу бодрость. But 4 or more cups in
день могут пагубно сказаться на вашем здоровье, особенно at
prolonged abuse. Coffee is contraindicated for people who suffer.
high blood pressure, heart failure,
cardiac rhythm disorders, as well as in case of acute ulceration
stomach disease.

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