What is caffeine?
Caffeine is commonly used psychoactive substance in the world. We have various types of food ranging from coffee and tea, until chocolate and coke. It synthesized naturally - so far it has been detected in the leaves, fruits and seeds of a lot of plants.
Products containing caffeine
It is located in a wide range of food products and some medicines. We have coffee, tea, coke, chocolate, in some fruits and seeds. As an additive is used in some painkillers as decreasing appetite and some drugs that relieve cold symptoms. Caffeine has no flavour.
Absorption and Distribution
In the body is absorbed and distributed very quickly because it is soluble in water. This means that through the bloodstream can reach each cell, so if you use caffeine regularly is probably a certain amount of this substance in all cells of your body at any time. Because easily passes through cell membranes the harder your body completely clean out the cells. Plainly said caffeine of a cup of coffee that you drink currently remain in the body for several days.
Chemical composition and effect
Caffeine has a similar chemical composition as adenosine and its underlying mechanism of action is contrary to adenosine. Adenosine has many important functions in the body, one of which is a suppressive act on neural activity. As antagonist of the adenosine caffeine stimulants act on the secretion of neurotransmitters and stimulate neural activity.
Side Effects
Caffeine is used as a stimulant, but as the consumption of any other remedy, the consumption of caffeine there is a risk of occurrence of side effects. Moderate consumption of caffeine, such as drinking to 3 small cups of coffee a day have a stimulating effect and is not considered harmful, while excessive intake of caffeine causes a variety of symptoms such as:
Acceleration of heart rate
Vomiting
Nausea
Excessive urination
Anxiety, restlessness
Depression
Tremors, shaking
Problems with sleep
Caffeine has a diuretic effect, so its excessive consumption can lead to dehydration, especially when we does not get enough fluids. Because the danger of excessive loss of fluid from the body we should take care of this especially when we have increased physical activity or during a hot weather.
Reduce your intake of caffeine
Caffeine makes addiction, so for people who often use caffeine it can show up withdrawal symptoms if you suddenly stop its consumption.
They are:
Headache
Decreased concentration
Irritability
Nausea
Vomiting
Therefore it is recommended cancellation of caffeine to go gradually.
Effect of long term
Moderate intake of caffeine is not considered harmful in the long run. Excessive intake however, in the long run can impact the values of blood pressure, can lead to the occurrence of chronic insomnia and is one of the risk factors for the occurrence of fibrocystic breast disease.
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