Caffiene Essay

604 Words 3 Pages
Caffeine is a very ubiquitous chemical. It is found in coffees, teas, sodas and chocolates. The caffeine content of these different things vary widely but the chemical has the same effect, to a varying degree depending on the amount consumed. Caffeine's most well known aspect is its ability to combat mental and physical fatigue. All around the United States and the world, it is the mostly widely used, legal stimulant available. Many people use it to keep working through fatigue and others use it to wake up in the morning.
Discovered in 2737 BCE by Emperor Shen Nung, tea is credited as being the first caffeinated beverage. Emperor Shen Nung was drinking hot water under a tea tree when a leaf fell into his drink. Shen Nung is
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Caffeine actually has a very similar effect to many psychoactive drugs because it changes the way neurotransmitters (chemical messengers) in the brain operate. Caffeine changes the operation of neurotransmitters, especially with adenosine. Adenosine affects nearly every single system in the body by making us feel tired and sleepy. The chemical builds up during the day and it naturally binds to the receptors. As more adenosine binds to the receptors in our brains, we feel increasingly tired. Caffeine, however, can bind to the adenosine receptors without giving us that tired feeling, which is where caffeine earns its ability to wake us up. Caffeine has an additional effect on the production and transmission of dopamine, acetylcholine and serotonin. Dopamine is a chemical that boosts our mood and makes us feel happy. A similar reaction in the brain occurs when addictive drugs are consumed and caffeine is considered a narcotic. Increased levels of serotonin, like dopamine, lead to a feeling of happiness along with an increased feeling of alertness. Acetylcholine is linked to muscular activity, which leads to caffeine’s ability to remove physical fatigue, but it often leads to small tremors or the worsening of chronic shaking. Since all of the neurotransmitters in the brain are at heightened levels because of caffeine, this triggers the pituitary gland to secrete a hormone that

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