I found your site by asking on Google if marijuana could actually WORSEN arthritis symptoms, because that is exactly what happens in my own case. And it happens quickly, within minutes, and can last for hours, even after only a few puffs. I am seventy-three, have studied ballet for years, and have developed severe hip and moderate knee arthritis from all of the repeated physical trauma. I rely on two canes to walk about. I suspended my marijuana use for about 5 days (I am a daily smoker of about two joints) to check about the pain generation, and, as soon as I recommenced its use, the aggravated pains and aches returned. Walking became much more crippled than usual, and my shins and knees ached and throbbed painfully, even when I was lying in bed. I am absolutely NOT simply imagining this!!! I have also experienced spinal stiffness when smoking, and I do not have spinal arthritis. I have been smoking for mood improvement for years, but now I am forced to try, at least, to relinquish pot for the reasons I have listed, but, if anyone has any other ideas on this subject, please do advise. I take no pharmacological drug for my arthritis pain.