According to data published in the journal Health Economics, US states with legal marijuana sales "may experience a decrease in state-level obesity rates."

A NORML report showed that researchers affiliated with North Dakota State University “compared obesity rates in Washington state following legalization to those of a synthetic control state."

The study “Assessing the impact of recreational marijuana legalization on obesity,” noted that researchers “examine this relationship by using a synthetic control approach to examine the impact of legalized recreational marijuana access on obesity rates by comparing Washington State to a synthetically constructed counterfactual.”

“We find that recreational marijuana's introduction did not lead to increased obesity rates and may have …

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