The health concerns of a controlled substance have never been my purview, but I haven't discerned an adequate involvement by the health professional community towards resolution. I spent a period of my LEO career as a NARC attempting interdiction and I wouldn't assess that as overly successful either. Today, much of commerce and industry are utilizing drug screening. What does that do except cast many into the unemployment sector whereas these employers aren't allowed to reveal such results to others.
That said, it has come a time in my life that health circumstances require I utilize a number of prescribed medications (controlled substances) that mediate my health conditions with no curative consequence but certainly are revealed in blood and urine tests every appointment I have with my doctor(s).
Now I ask how many in similar health conditions utilizing prescribed controlled substances as I have, now sit as administrators of companies, officials in government, and are also allowed to sit in juries? Do Judges? Then I ask how many need them and don't use them and what is the consequences?
My summation is that it is abuse of controlled substances that is the real problem. The reality is that we either lock them up or bury them.