Americans consume a large majority of the world’s opioids. Approximately 80% of the global opioid supply is consumed in the United States, a country that represents a mere 5% of the global population. There were approximately 300 million pain prescriptions written in the US in 2015 equating to a $24 billion market. While we seem to know a fair amount about pain from the financial side, the actual science behind pain is still somewhat of an enigma. Let's take a closer look at pain science.