Caffeine in our daily life!!!

Caffeine..caffeine..caffeine.. All people around the world including me like to drink coffee. There are so many coffee shop such as Starbucks, Coffee Bean, Black Canyon Coffee and others. All coffee contains caffeine. Actually, what is caffeine??

In 1819, Caffeine is discovered by Friedrich Ferdinand Runge(German chemist).The common name for caffeine is trimethylxanthine and the chemical formula is C8H10N4O2. It is composed of carbon,hydrogen,nitrogen and oxygen based on the chemical formula.Caffeine also known as coffeine, theine, mateine, guaranine, or methyltheobromine. Caffeine is obtained from several plants such as coffee beans, cacao beans, tea and others. It acts as natural pesticide for plants.

After caffeine is purified, it looks like white powder and taste bitter. It is classified as alkaloid. It is odorless and slightly soluble in water and alcohol. Caffeine is known as drug because it stimulates our central nervous system and increases the alertness, heart rate, and respiration. It may alter our mood too. Therefore, overdose of caffeine can dangerous our body. Coffee, tea, soft drinks, energy drinks and even pain reliever also contains caffeine. Caffeine provides the soft drinks a pleasing bitter taste. Therefore, caffeine is known as the world's most widely consumed psychoasctive substance.

100mg of caffeine is considered as normal because it is same to the amount found in a cup of coffee. Caffeine gives us a temporary energy boost and elevates mood. But why caffeine has such a strong effect on us? Why..why??

Caffeine stimulates the brain and acts as a mild diuretic(makes a person urinates more). Adenosine is a chemical; and it contains within the brain. The adenosine will bind with certain receptors. It functions to slow down the nerve cell activity when we are sleeping. However, the structure of caffeine looks similar with adenosine. Therefore, it also binds with the adenosine receptors. Due to it is not really an adenosine, it doesn't slow down the cell's activity but increases it. It may cause the blood vessels in the brain constrict.

Our body will recognize all of this activity as danger. Therefore, the pituitary gland will release hormones and tell the adrenal glands to produce adrenaline. Adrenaline will make our heart to beat faster and the breathing tubes will open up also. Then, the liver will release sugar into the bloodstream for extra energy and the muscles is tighten up. Caffeine also increases the levels of dopamine. Dopamine provides the feelings of enjoyment and reinforcement. Therefore, it makes us energetic and excited.

Besides that, caffeine also causes the body to lose calcium. Drinking lots of coffee will cause osteoporosis.

Therefore, take less caffeine..makes our body more healthy..