Flutterby™! : Poppies will make them sleepy

In the vein of "evidence-based medicine". Theodore Dalrymple questions the common wisdom about opium:

When, unbeknown to them, I have observed addicts before they entered my office, they were cheerful; in my office, they doubled up in pain and claimed never to have experienced suffering like it, threatening suicide unless I gave them what they wanted. When refused, they often turned abusive, but a few laughed and confessed that it had been worth a try. Somehow, doctors—most of whom have had similar experiences— never draw the appropriate conclusion from all of this. Insofar as there is a causative relation between criminality and opiate addiction, it is more likely that a criminal tendency causes addiction than that addiction causes criminality.