The science of weed Cannabis and its compounds show potential to save lives in three important ways. Cannabis can help treat pain, reducing the initial need for opioids. Cannabis is also effective at easing opioid withdrawal symptoms, much like it does for cancer patients, ill from chemotherapy side effects. Finally, and perhaps most important, the compounds found in cannabis can heal the diseased addict’s brain, helping them break the cycle of addiction. Mr. Sessions, there is no other known substance that can accomplish all this. If we had to start from scratch and design a medicine to help lead us out of the opioid epidemic, it would likely look very much like cannabis.