Food and drinkCoffee

Have you thought about what actually makes caffeine with your body?

We are so used to the fact that a cup of strong coffee, black tea or a rare energy drink helps us to cheer up in the morning or not to fall asleep during a boring day in the office, that we do not even think for a second why and how it happens. What effect does caffeine have on our body and is it extremely useful? Here are the most famous and expected, as well as not very pleasant side effects of caffeine.

Caffeine invigorates

This is perhaps the most famous and expected effect of caffeine. This is why we hurry first thing in the kitchen, just opening our eyes after sleep, and some, even before they have time to open ... The fact is that the brain produces adenosine - a hormone that binds receptors, attracting them to themselves, and slows the work of neurons , And this leads to drowsiness and fatigue. Caffeine blocks the binding of receptors and adenosine, leading to the fact that more neurons are involved in the work of the brain.

Acts as a laxative

Caffeine activates the muscles, and this applies not only to the press and biceps, but also to the muscles of the large intestine. In addition, caffeine promotes active production of a hormone that stimulates the digestive tract.

Increases energy

After a cup of morning coffee, we feel better not only because caffeine reduces drowsiness, but also because of exactly how it happens. The fact is that adenosine, which was blocked by the ability to bind receptors, starts to "panic", plunging the nervous system into a kind of mini-stress, causing a reaction "hit or run." In the body, more adrenaline and norepinephrine are produced, and sugar is thrown out in the blood so that the body can more quickly and effectively cope with the threat that adenosine has caught up with idleness.

Optimizes energy costs

As a result of consumption of caffeine and the release of adrenaline, heart rate increases and the flow of blood into the lungs accelerates, which allows them to produce more oxygen. When the body has more oxygen, the muscles work more efficiently, spending less effort on it. As a result, we work faster, better and less tired. In addition, coffee speeds up metabolism.

Improves concentration

In addition to the fact that caffeine blocks the normal work of adenosine, it also increases the activity and production of serotonin, dopamine and a number of other neurotransmitters, which, in turn, improve brain function. For example, norepinephrine or norepinephrine increases the activity of brain receptors responsible for memory and concentration.

Relieves headaches

Caffeine has a vasoconstrictive effect, which alleviates some of the symptoms, for example high blood pressure and headaches. Not without reason in many popular drugs, along with aspirin and paracetamol, caffeine is also used, which greatly increases and accelerates their effect.

Causes dependence and withdrawal symptoms

Smoothly move to negative effects. As with many other psychoactive substances, it is important to observe the norm in caffeine consumption. Even water in too large quantities can damage, not to mention caffeine. More often than not, excessive consumption itself is harmful, but a sharp cessation. If you drink too much coffee, your brain adapts, allocating more receptors, so that adenosine does not stay idle. Such a number of receptors becomes the norm, so there is a kind of dependence that ends "breaking" if caffeine is consumed less regularly or stops coming at all. This, of course, is not a terrible break-up, but it is nevertheless accompanied by headache, irritation, drowsiness and lack of concentration. It looks like an ordinary morning? So you drink too much coffee.

Stomach problems

Caffeine is not really useful for the work of the stomach, because it increases the secretion of acid and stimulates the work of the muscles of the intestine. So try not to drink coffee on an empty stomach.

Insomnia

The effect of caffeine is seen after 15 minutes and does not stop for at least six hours. Throughout this time, your body is under the influence of this stimulant. If you are sure that it does not work for you, because you easily fall asleep after a cup of coffee, you are mistaken. Even if you manage to fall asleep, the sleep mode and its structure breaks down and your brain does not practically fall into a deep sleep. Caffeine at night will only increase fatigue the next morning.

Osteoporosis

This condition is accompanied by a decrease in the density of the spongy substance of the bones, which leads to their fragility. This condition develops in cosmonauts, who spend a long time in conditions of minimal gravity or weightlessness. The same risk is experienced by lovers of caffeine, and especially at risk people in old age, whose bones by virtue of old age and so lose their strength.

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