When are people going to understand that people are people, and everybody was wired differently? That different wiring invokes different coping mechanisms. That's what makes us individuals.
Food contains drugs. Drugs cause pleasure.
If you become addicted to eating, you will get fat.
Some people become addicted to "traditional" drugs(alcohol, cigarettes, marijuana, coffee).
Some people become addicted to exercising. Those people are skinny.
Some people are prone to being addicts. It is either genetic, or "wired".
Some people never become addicted to anything.
None of the addictions are any different at heart. They just require different interventions.