I honestly can't say that taking a few tokes relieves all of the back pain I have when my muscles are in an intense spasm and my S.I joint and lower vertibrae(L5) are not aligned...although it does help with most of it. I smoke to relax the muscles so I can stretch it out and get my spine, sacrum and ilium aligned properly....and the euphoric high helps me focus on the task. After years of seeing chiropractors, the adjustments have just become too brutal. It takes me 2 to 5 days to recover from a chiropractic adjustment and worst case scenario 2 weeks with multiple adjustments. I'll only make the call if I absolutely have to. And like lordjin says its all about genetics...find the strain that best suits your needs. Best of luck to ya.