#Addiction #Caffeine #CocaCola #Coffee #dependence Composition Caffeine – 1,3,7-trimethylxanthine, to give it its chemical name – is a member of a group of naturally occurring substances called methylxanthines. These compounds are similar in structure to adenosines, naturally occurring molecules in our bodies which aid the onset of sleep. In its natural context, which is in tea and coffee plants, caffeine can kill or paralyze insects and is thus an effective natural pesticide. The beginning of the buzz The earliest recorded caffeine consumers were in China in the 10th century BC, when philosophers believed tea-drinking was "an indispensable ingredient to the elixir of life". Coffee-quaffing originated in Yemen in the 15th century. The exact amount of caffeine present in a drink depends on its growing conditions and preparation. While tea naturally has more caffeine gram for gram than coffee, there is less tea per cubic centimeter of a cup, leading to its weaker