I was talking with somebody one day and the subject turned to marijuana as medicine. He told SWIM about some medical facts he had learned about marijuana use. Apparently the majority of males who stop using marijuana after long term use develop back problems (primarily lower back problems). SWIM can't remember exactly why he said this happens, but apparently it only occurs in males and not in females. The weird part about it was that I had experienced exactly what he said. I had quit smoking marijuana and about 6 months later, was diagnosed with chronic lumbar pain. He even had to take physiotherapy and start going to the gym to strengthen his back muscles. SWIM still gets lower back pain, but it isn't as bad as it was before. At one point before treatment, I couldn't even walk without a shooting pain developing in his lower back. It felt like his spine was twisted up into knots. I was wondering if anybody else has ever experienced this, or knows anything about the medical/scientific aspects of it.