The Effect of Medical Marijuana Laws on Body Weight
Version of Record online: 25 NOV 2015
Copyright © 2015 John Wiley & Sons, Ltd.
How to Cite
2015) The Effect of Medical Marijuana Laws on Body Weight. Health Econ., doi: 10.1002/hec.3267., , and (
- Version of Record online: 25 NOV 2015
- Manuscript Accepted: 8 SEP 2015
- Manuscript Revised: 14 JUN 2015
- Manuscript Received: 12 DEC 2014
- medical marijuana laws;
This study is the first to examine the effects of medical marijuana laws (MMLs) on body weight, physical wellness, and exercise. Using data from the 1990 to 2012 Behavioral Risk Factor Surveillance System and a difference-in-difference approach, we find that the enforcement of MMLs is associated with a 2% to 6% decline in the probability of obesity. We find some evidence of age-specific heterogeneity in mechanisms. For older individuals, MML-induced increases in physical mobility may be a relatively important channel, while for younger individuals, a reduction in consumption of alcohol, a substitute for marijuana, appears more important. These findings are consistent with the hypothesis that MMLs may be more likely to induce marijuana use for health-related reasons among older individuals, and cause substitution toward lower-calorie recreational ‘highs’ among younger individuals. Our estimates suggest that MMLs induce a $58 to $115 per-person annual reduction in obesity-related medical costs. Copyright © 2015 John Wiley & Sons, Ltd.