Carmel - YES! Addiction doesn't always mean pills, alcohol!
Avoiding the underlying causes can take many other forms: perfection, power, being a victim, sleeping, revenge, being right, being nice, being helpful, talking, sports, working, shopping, envy, politics, pointing out faults, coffee, gambling, money, winning, reading, exercise, nicotine. Are some "healthy" addictions? In moderation, are some considered dangerous? There are good habits and bad habits. Is it the obession that makes it unhealthy, consuming every minute of every day for the "fix?"
Talking to your kids about drugs doesn't work. Getting comfortable with talking with your kids about the underlying causes take education and practice and brings them to the surface so they can deal with the driving force.
As an example, I was addicted to exercise. I was at the gym 7 nights a week for 3-4 hours. The underlying cause? To avoid being around my now ex-husband. Would the outcome of our marriage been any different had I been conscious of avoiding conversations that were uncomfortable?
Would there be less need for Programs if parents talked about the behavior driving the destructive behaviors the whole family enables?