Study claims cannabis is better painkiller for MEN than for women

Men have greater pain relief than women after smoking marijuana, new research reveals, reports Daily Mail.

The study - the first to test this theory in humans - comes as more and more Americans turn to the drug to ease pain, driving a national legalization movement.

Medical professionals have welcomed the research as proof that the increasingly-political research field must focus on both genders to provide a detailed understanding of cannabis and its effects. 

'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.'

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.

Despite differences in pain relief, men and women did not report differences in how intoxicated they felt or how much they liked the effect of the active cannabis.

The authors noted that additional studies in both men and women are needed to understand the factors that impact the analgesic effects of cannabinoids, the active chemicals in cannabis products, including strength, mode of delivery (smoked versus oral), frequency of use and type of pain measured.

Results of the study by Columbia University Medical Center (CUMC) were recently published online in Drug and Alcohol Dependence.

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