>Of those who began their opioid abuse in the 1960s, more than 80% indicated that they initiated their abuse with heroin. In a near complete reversal, 75% of th

>Of those who began their opioid abuse in the 1960s, more than 80% indicated that they initiated their abuse with heroin. In a near complete reversal, 75% of those who began their opioid abuse in the 2000s reported that their first regular opioid was a prescription drug. http://jamanetwork.com/journals/jamapsychiatry/fullarticle/1874575 http://jamanetwork.com/journals/jamapsychiatry/fullarticle/1...