Could Pot Prevent a Pot Belly? Researchers Get the Skinny on Cannabis


Oct. 12, 2022 – Another stoner stereotype bites the dust: Despite its appetite-boosting effects – better known as the “munchies” – cannabis may actually help keep your weight in check.

 Cannabis users may be less likely to become obese than people who abstain, according to a recent study in the journal Health Economics. The study tracked health data from the state of Washington before and after 2014, the year cannabis became widely available there for recreational use. 

According to the study: Marijuana legalization, which allowed for recreational marijuana dispensaries to open, resulted [in] decreases in obesity rates for Washington State.” 

During the 4 years after legalization, the states obesity rate was 5.4% lower, on average, than it would have been had cannabis not been legalized. 

How Did They Figure That Out? 

The researchers set up something called a synthetic counterfactual. 

Its the best approximation of what Washington would have looked like had it not legalized marijuana,” says lead author Raymond March, PhD, an assistant professor of applied economics at North Dakota State University. March and his colleagues came up with a population that’s like Washington states by combining data from states that did not legalize during those same 4  years, including Arizona, Minnesota, Kansas, and New Hampshire.

Hence the synthetic counterfactual” – what Washington might have looked like had it not legalized. The authors conclude that the state would have had 5.4% more obese people over the post-treatment period” – the 4 years after legalization – with the medical expenses and human misery that go along with such obesity-related conditions as diabetes, heart disease, stroke, and increased risk of early death. 

The researchers also compared Washington states obesity numbers with the national trend. Both trend upward, but after 2014, Washingtons rate of increase declined significantly. 

Why Might This Be Happening?

Thomas Clark, PhD, a physiologist with the Department of Biological Sciences at Indiana University in South Bend, addressed one possible reason in a 2018 study in the journal Cannabis and Cannabinoid Research. According to the study, Cannabis use appears to reverse the impact of the modern American diet on health by reducing the effects of an elevated ratio of omega-6/omega-3 fatty acids on endocannabinoid (eCB) tone.” 

Clark explains: The 1970s saw increasing obesity in the United States, and its still rising today. It began with the government subsidies of corn- and soybean oil, which alter the bodys physiological regulation of metabolism. When you alter the balance of omega-6 fatty acids and omega-3 fatty acids – which you do by increasing vegetable oils such as soybean oil in the diet – the bodys endocannabinoid system becomes overactive, resulting in weight gain.” 

The endocannabinoid system – which promotes homeostasis, or balance, in the body – is regulated by signaling molecules that are mimicked by chemicals in cannabis. Yes, cannabis stimulates appetite, hence its therapeutic use by people with diseases like AIDS, or who are getting appetite-killing treatments like chemotherapy. But according to Clark, it also down-regulates the endocannabinoid system, bringing it into balance, preventing weight gain, and, theoretically at least, helping the people of Washington slow the tide of weight gain in their state.

My research indicates that we should look at these metabolic diseases and their correlation with cannabis use,” he says. There may be a significant health benefit to cannabis use.”

If those benefits can be confirmed, cannabis might be one answer to the swelling waistlines and health risks of the American public.



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