That is incorrect. When you get addicted to substances such as heroin, your body becomes dependent on the drug, and needs it to function normally which is why addicts go through extreme withdrawl pains. Each drug has it's own withdrawl symptoms (eg. caffeine: crankiness, shaky hands, etc.) Some are more severe than others, depending on how powerful the drug is. And lol, shopping is not addicting, that's an excuse for women to bankrupt their husbands and boyfriends. Oh and the reason why chocolate is addictive: caffeine, so caffeine and chocolate are essentially the same thing.