You pose a very interesting question and it is related to the relationship between the mind and body. In my explanation, I want you to assume that the mind is what the brain does on a chemical level.Caffeine is a psychoactive drug. It is a stimulant and it affects the brain. Depending on the individual taking it, caffeine can have various effects, but some common ones are increased mental awareness and even physical endurance.

Addiction is a complex condition. A hallmark symptom is when addicted people seek their substance, for instance caffeine, if it is not in their best interest to have it. An example is coffee drinkers taking another cup to remain awake or to just enjoy the substance even if their bodies are tired and need sleep. This would be considered an addiction.