This Video goes over interesting facts about caffeine, coffee, tea, soft drinks, cola, the average American consumption of caffeine, etc.
Caffeine is a Mental Illness - Psychology by Sandy
The American Psychiatric Association list four different caffeine related Mental Disorders in the DSM w/ plans to add caffeine withdrawal in the next addition. Caffeine addiction is not listed.
Caffeine is the most popular stimulant drug in the world. It is a psychoactive substance with is addictive. Caffeine is a natural pesticide.