Archie Comics Fan Forum

I recently purchased a large quantity of Archie digests at a local Half-Price Books.  Earlier this week, I was reading one from 1989.  I recall I started reading Archie Comics in 1988, at the age of 5.  The digest I was reading had an anti-drug advertisement.  I fondly remember seeing many of these as a child.  There was also a 2 part story that had a very strong anti-cigarette message.  
   This got me thinking.  I don't keep up with Archie Comics all that closely, but I do make some effort, and I don't recall seeing any anti-drug advertisements for many years.  When did they stop printing them?  Why did they stop?  Why haven't there been any anti-marijuana ads (or presumably stories) in the last several years?  

I'm not sure when they stopped printing those, but I'd guess sometime in the mid to late 90s. The anti-drug ads were everywhere in the 80s and early 90s. There was even a TV special featuring cartoon characters (Cartoon All-Stars to the Rescue in 1990)