According to the National Survey on Drug Use and Health, more Americans abuse prescription painkillers, sedatives and stimulants than all illicit “street” drugs combined except marijuana. And the number of people first abusing a prescription drug exceeds that for those first abusing marijuana. This phenomenon is significant, as the Centers for Disease Control and Prevention now estimates that about 100 people die everyday from unintentional drug overdoses, making this the leading cause of accidental death in the U.S. The average age when prescription drug abuse starts is around 21, therefore it is critical that our colleges and universities do more to help prevent this potentially deadly behavior.
Source: http://www.cdc.gov/drugoverdose/