Marijuana today is not what it was, and when people say they're having trouble giving it up, it may be because it's twice as strong as it was only 20 years ago.

Marijuana addiction is real. Just ask the 15% of people entering a drug-abuse program that reported Marijuana as their "preferred" drug of abuse. To some, the growing number of people smoking pot may be distressing – primarily to parents, many of whom may have had some experience of their own with the drug. Yet, the times have changed. The plant and its consumption is not what it used to be back in the good old hairy days of Woodstock.