Despite the increasing prevalence of chronic pain?nearly one in three Americans suffers from it?medical progress has been slow and halting. This is an epidemic we don’t know how to treat. For the most part, doctors still rely on over-the-counter medications and opioid drugs, such as OxyContin and Vicodin. While opioids can provide effective relief, they’re also prone to abuse, which is why overdoses from prescription painkillers are now a leading cause of accidental death.