Opioids: 500 billion dollar problem. https://www.naturalnews.com/2017-11-18-treating-veterans-pain-with-big-pharma-opioids-is-proving-to-be-deadly-and-has-to-stop-now.html https://www.bloomberg.com/news/articles/2017-11-20/trump-economists-say-opioid-crisis-much-bigger-than-envisioned