The Palm Beach Post published a comprehensive look into how Florida’s OxyContin market fueled the heroin epidemic. They found that Florida was the main source of oxycodone in every state east of the Mississippi, and when Florida finally curbed that export, people turned to heroin. 

“To backtrack the origins of the heroin crisis, The Post layered different data sets atop one another, combing through federal, state and local death, treatment and hospital records spanning 50 states and 15 years.”