Donald Trump has really gone and done it now. He is backing a new approach to opiates currently being legislated in Congress.
“Substance use disorder is a medical illness and we must treat it that way,” House Energy and Commerce Committee Chairman Greg Walden, R-Ore., said during a March legislative hearing.
That attitude has touched not only opioid legislation, which Walden hopes will pass in the lower chamber by Memorial Day, but other areas of policy-making as well. Congressional Republicans now reject requiring drug testing as a condition for people to receive food stamps.
That and this and this on cannabis is going to deprive the Democrats of their biggest issue.
Update: 8 September 2018 1004z
We do know quite a bit about what causes addiction.
Dr. Lonny Shavelson found that 70% of female heroin addicts were sexually abused in childhood.
Addiction is a symptom of PTSD. Look it up.
The NIDA says Addiction Is A Genetic Disease