"Bessel van der Kolk, a Boston-based psychiatrist who has devoted his career to the study and treatment of trauma, says that “[trauma] lies in your body, so when you start taking drugs, you feel calmer. When you stop taking drugs, you have a dual issue: one is the withdrawal from the drug, the second is that you’re dealing with pain and trauma that’s still in the body.
While medication-assisted treatments like methadone and buprenorphine have been proven effective at reducing cravings and correcting some brain changes likely attributed to drug use, they don’t target traumatic responses. That’s where mindfulness comes in.
Van der Kolk says that current addiction programs in the United States tend to ignore the curative effects of becoming re-connected with one’s body. He says we need more “programs where people become familiar with their bodies. Self-regulating their bodies should be the focus of treatment because it’s bodies [that] are stuck.”"
https://www.thefix.com/can-mindfulness-meditation-prevent-relapse