Question Author
Oh dear. Looks like the unwelcome side-effects would include death, which is probably classifiable as irreparable damage.
Also: "Caffeinism usually combines caffeine dependency with a wide range of unpleasant physical and mental conditions including nervousness, irritability, anxiety, tremulousness, muscle twitching (hyperreflexia), insomnia, headaches, respiratory alkalosis, and heart palpitations." Which pretty much explains why I started thinking I had vCJD.
Jolly good show.