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Marijuana Lowers Obesity and Diabetes Risk

Marijuana and a burger

Multiple studies suggest marijuana lowers body mass index and body fat percentage, while exerting a positive effect on fasting insulin levels. CannaMD takes a closer look at the research, below.

Marijuana and obesity

In 2011, the American Journal of Epidemiology reviewed two population-based nationally representative studies exploring the relationship between marijuana use and obesity. After analyzing results from over 50,000 respondents, researchers concluded:

The prevalence of obesity was significantly lower in cannabis users than in nonusers […] The proportion of obese participants decreased with the frequency of cannabis use.

Addressing widely held stereotypes, the authors added:

This cross-sectional analysis indicated that despite the evidence that cannabis use stimulates appetite in clinical trials and laboratory studies, cannabis users are actually less likely to be obese than nonusers in the general population.

Likewise, a study from 2006 found that even though marijuana use may be correlated with increased caloric intake, it is not associated with higher body mass index (BMI) or glucose levels.

While surprising to some, a number of studies have found similar results. In 2014, researchers reviewed data from 786 participants, concluding:

Cannabis use was statistically associated with lower body mass index and lower percent fat mass… after adjusting for numerous confounding variables.

Approaching the issue from a different angle, The American Journal of Medicine published supporting results, noting:

We found significant associations between marijuana use and smaller waist circumferences.

So what’s going on?

No one knows for sure, but researchers think it might have something do with how marijuana affects adipose tissue (fat) metabolism or possibly cannabinoid receptor CB1 (the principal brain receptor mediating marijuana’s effects). Interestingly, the same researchers did not find that glucose metabolism was involved with the cannabis/BMI connection; however, other studies suggest a possible degree of involvement.

Marijuana and diabetes

In addition to lower rates of obesity, cannabis users also demonstrate a lower risk for diabetes, with a recent study concluding:

In a robust multivariate model controlling for socio-demographic factors, laboratory values and comorbidity, the lower odds of diabetes mellitus among marijuana users was significant […] Marijuana use was independently associated with a lower prevalence of diabetes mellitus.

(Results were so impressive that Time followed up with an article titled, Marijuana: The Next Diabetes Drug?.)

Speaking of his own 2013 research, Harvard Medical School professor Murray Mittleman writes:

The most important finding is that current users of marijuana appeared to have better carbohydrate metabolism than nonusers. Their fasting insulin levels were lower, and they appeared to be less resistant to the insulin produced by their body to maintain a normal blood-sugar level.

Again, researchers are unsure of marijuana’s exact mechanism of action; however, one hypothesis points to the role of myrcene (the most abundant terpene in cannabis). Scientists from the University of Jordan found that myrcene and thujone (a non-cannabis, naturally occurring chemical compound) produced a “pronounced hypoglycemic effect” in diabetic rats.

As with the weight loss effect, researchers also believe cannabinoid brain receptors likely play a large role in marijuana’s influence on insulin.

Research updates

For updates on new obesity, diabetes, and cannabis research, be sure to follow CannaMD on Facebook, Instagram, and Twitter.

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Have experience with today’s topic? Let us know in the comments section below!

Author Bio


  1. Being approved for MMJ by the state of Florida saved my life. I had been on opioids for over twelve years for chronic pain. I could not function with my chronic pain unless I had some type of pain medication. I felt hopeless as most people did after DEA decides we have opioid epidemic then chronic pain people had to jump through the hoops of bureaucracy a nauseum. Being approved saved me from a very poor prognosis of quality or the caring to continue life.

    1. So glad to hear you found medical cannabis and it’s made a positive impact on your life! Thank you for sharing your experiences – it’s truly amazing what MMJ can do!

    2. What did you use that helped with the pain. Haven’t found the combination yet to alleviate back pain . I know not all works with everyone but it would be a start for me.

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