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The full chemical name for caffeine is 1,3,7-trimethylxanthine and its chemical formula is C8H10N4O2
Caffeine was first isolated from coffee in 1820
In its pure state, caffeine is a crystalline white powder
Caffeine can be found in 60 different plants
10g of caffeine is considered a lethal dose
It's the most popular drug in the world. Ninety percent of Americans consume it in some form every day
Over 450,000,000 cups of coffee are consumed in the USA every day!
Darkly roasted coffee has less caffeine than lightly roasted
Contrary to popular belief, caffeine (or coffee) won't help someone sober up if they have had too much to drink
How caffeine works
Caffeine causes changes in the chemicals of your brain, mainly in 2 ways.
It mimics adenosine, and binds to all the adenosine receptors in your brain. This prevents the real adenosine from doing its job, which happens to be the slowing down of nerve impulses and the causing of drowsiness. So your brain becomes more alert. Caffeine also increases the levels of dopamine in your brain, which improves your feeling of well-being and improves your mood. It's this dopamine effect that is the root of caffeine's addictive properties
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