Caffeine – truths and myths. What is worth knowing about caffeine?


Can coffee and other drinks with caffeine drink hypertensioners, heartbeats, pregnant women? Is caffeine in tea weaker than in coffee? Is caffeine caused by nutrient deficiencies? Is coffee with milk healthier than black? facts and myths about caffeine!



Caffeine stimulates the body

TRUE: Caffeine has stimulating properties by acting on the cerebral cortex, resulting in better focus, longer concentration time, reduced fatigue and drowsiness, and some studies indicate that it improves logical thinking and memory, but this is a short-term effect, and with the excretion of caffeine from the body is lost. The average half-life of this compound in the body is 4 hours (each has a different sensitivity to caffeine – faster metabolizes, for example, in smokers).


Caffeine is not only in coffee

Caffeine is a common alkaloid, occurs in about 65 species of different plants. In addition to coffee beans, it contains, among others, tea leaves, cola nuts, cocoa beans, guarana.The caffeine extract obtained from these plants is added, for example, to beverages and candies. 



Caffeine is easily overdosed

We drink it in various beverages, eat it in chocolate, take it in medicines. They are disturbed by the results of research conducted among Warsaw junior high school students – they drink up to 6 cans of energy drinks a day.The safe dose for children is about 5.3 mg / kg body weight, or for example, 140-160 mg of caffeine per day for a tenth year – slightly more than 1.5 cans of these beverages For an adult person a safe dose of caffeine is below 300 mg a day.Above 500 mg is already considered an overdose and more than 2000 mg – for Caffeine poisoning causes, among others, strong stimulation, dissociation, hot flushes, dizziness, convulsions, insomnia.Addition of caffeine in adolescents may cause trouble with sleep, attention, nervousness.


Caffeine is not harmful to health

Caffeine is a compound used in painkillers, because it relieves pain and tension, it also affects the release of dopamine – the hormone responsible for the feeling of satisfaction .In addition, caffeine can lower histamine in the body (a compound responsible for allergic reactions) .It is also used in the treatment of bronchial asthma, because it expands the bronchi, there are more and more scientific reports that coffee consumption may reduce the risk of type 2 diabetes and some cancers, but this has not yet been proven.


Caffeine contained in tea is not weaker than that in coffee

Caffeine in tea is simply less than in coffee and therefore works to a lesser extent, so we have to drink a lot more tea to achieve a coffee-like effect of arousal.


Worth knowing

Average caffeine content

A cup of coffee (200 ml) – 80-140 mg (depending on the amount of coffee)

A cup of cappuccino – about 40 mg

A cup of black tea – approx. 50 mg

A cup of green tea – approx. 30 mg

Energy drink (250 ml) – approx. 90 mg

Cola drink (250 ml) – 30-50 mg

Chocolate (100 g) – 10-70 mg


Caffeine can cause shortages of some nutrients

It all depends on the diet and the amount of these beverages. Because they have a diuretic effect, some minerals, especially calcium, are slightly lost in the urine, but the assumption is not confirmed that people with osteoporosis are responsible for this condition Even if a person consumes a low amount of calcium in the diet (the norm is about 1000 mg per day) and at the same time drinks a lot of coffee, it may affect the development of the disease. It is also known that drinks with caffeine may weaken the use of magnesium, zinc and B vitamins in the body. If it is normal to drink these beverages earlier than half an hour after an iron-rich meal. we nourish and supply the right amount of these ingredients, it’s a moderate coffee drinkquantities (2-3 cups a day) does not affect the shortage of these compounds.


Drinks with caffeine can drink people with hypertension

Although caffeine is known to increase blood pressure, the relationship between moderate coffee consumption and the development of hypertension has not been found.” In most hypertensive patients, 1-2 cups of not very strong coffee do not cause adverse effects. diary and measure your blood pressure after drinking drinks with caffeine If they notice a significant increase in pressure, they have to give up on them.It is also worth consulting with your doctor, in what quantities you can drink coffee.


Moderate drinking caffeinated beverages does not affect heart disease

Drinks with caffeine have no effect on the occurrence of heart and circulatory diseases, but they are often drunk in large quantities.” People who drink a lot of coffee often smoke cigarettes, live a sedentary lifestyle, eat unhealthy food. with risk factors for coronary heart disease, it is actually conducive to heart disease, and people with low caffeine metabolism are also at risk.


Pregnant women should limit drinking drinks with caffeine

There is no clear confirmation that caffeine harms pregnant women, although according to studies comparing the relationship between the amount of caffeine in the diet and miscarriage, the occurrence of birth defects, problems with pregnancy, no such relationships are found, caution is advised. Pregnant women (similarly to women using birth control pills) are much longer than those who are not pregnant, and coffee also limits the absorption of nutrients from the diet, which may hinder demand during pregnancy. weak brew.


Coffee brewed in a glass is more harmful than soluble and from the coffee machine

It does not depend on the caffeine content, but the presence of diterpenes in the coffee – compounds that can raise cholesterol in the blood.Those substances are removed in the process of filtering coffee, they are also in soluble coffee, but are in large quantities in coffee brewed in If you have atherosclerosis or hyperlipidemia, please do not drink coffee.


Coffee with milk is healthier than black, but tea is better to drink without milk

The addition of milk to some extent compensates for the loss of calcium.” In addition, the milk alkalizes the coffee, which has a beneficial effect, because we eat too many products with acid reaction (eg meat). In coffee and tea there are polyphenols with antioxidant activity. tea has been proven in many studies, but when we pour milk into tea, we will precipitate these compounds, which will inhibit their action, which is why tea is better to drink without milk.


Caffeine contained in cosmetics combats cellulite

Cosmetics manufacturers use the unique properties of caffeine in removing cellulite and skin flaccidity.This compound improves blood circulation and lymph outflow, helps get rid of accumulated toxins.In addition, it adds energy and allows you to maintain its firmness.

Posted on: November 9, 2018

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