An anonymous reader quotes a report from PsyPost: Researchers from Columbia University Medical Center (CUMC) found that men had greater pain relief than women after smoking marijuana. In this study, the researchers analyzed data from two double-blinded, placebo-controlled studies looking at the analgesic effects of cannabis in 42 recreational marijuana smokers. After smoking the same amount of either an active or placebo form of cannabis, the participants immersed one hand in a a cold-water bath until the pain could no longer be tolerated. Following the immersion, the participants answered a short pain questionnaire. After smoking active cannabis, men reported a significant decrease in pain sensitivity and an increase in pain tolerance. Women did not experience a significant decrease in pain sensitivity, although they reported a small increase in pain tolerance shortly after smoking. "These findings come at a time when more people, including women, are turning to the use of medical cannabis for pain relief," said Ziva Cooper, PhD, associate professor of clinical neurobiology (in psychiatry) at CUMC. "Preclinical evidence has suggested that the experience of pain relief from cannabis-related products may vary between sexes, but no studies have been done to see if this is true in humans."
You can view the results of the study online in Drug and Alcohol Dependence