Did you know that worldwide 120,000 tons of caffeine is consumed each year? This corresponds to a beverage, the caffeine per day for each of more than 5 billion people on Earth.

Welcome to the largest consumption of psychoactive substances in the world.

The people used this drug since the Stone Age. Our forefathers high spirits, promote awareness for the relief of fatigue and chewing the bark, leaves or seeds of plants.

Today, our fine taste, but they are very different. We consume caffeine in coffee, tea, cocoa, chocolate, carbonated beverages, and certain medications. But what we really know on the ground, the consumption is only in the competition for the water?

Caffeine is in large quantities in fruits, leaves, beans and more than 60 plants. In the plant world, caffeine acts as a natural pesticide paralyzes and kills certain insects which feed on these plants.

But the word comes from the French word for coffee, café. Coffee in the morning may, a typical minimum of 200 grams of caffeine. A cup of tea around 70mg, soft drinks from 10 to 50 mg for the beverage and middle portion 28g milk chocolate contains as much caffeine as a cup of decaffeinated coffee.

Studies have shown that the tolerance for the subjectivity of the effects of caffeine may be to develop after consuming 300 milligrams of caffeine, 3 times per day during 18 days and sometimes even earlier.

Caffeine is completely through the stomach and small bowel in 45 minutes, but its effects are felt after about 15 minutes. And what are they? Well, the caffeine is a central nervous system disorders and metabolic stimulating.

Due to the release of noradrenalin in the brain after taking the caffeine increased respiration, increased pulse, increased blood pressure, stimulates the kidneys, temporarily relieves fatigue and stimulates the brain, improves mental.

The levels of Theo bromine and caffeine (tea and cocoa) are like sugar in its effects on the body. Stimulates the adrenal glands release a substance such as adrenaline, causing the release of blood sugar in the liver.

This gives the platform Drink beverages caffeine, Such as alcohol and nicotine, caffeine readily through the blood-brain barrier. Does the brain, but also restricts the blood vessels in the brain. If you usually drink a few cups of coffee per day, but decided to rest, the blood vessels expand, which is quite a headache, one of the most well-known symptoms.

Other symptoms may include irritability, inability to concentrate, and stomach pain.

These feelings can be 12 to 24 hours, if not exceeded caffeine lips shows in around 48 hours and duration of one to five days.

He takes the body on average 7-9 for the caffeine in coffee. But the women metabolize caffeine about 25% faster than the men, if they do not take oral contraceptives or ovulation occurs, then the time from 10 to 20 clocks!

So, in my opinion, 1-2 cups per day does not cause much damage, but the benefits that are achieved by using only the caffeine, if you have a lot to overcome their psychological dependence on the day the coffee cups.