A team of Michigan State University researchers assessed the relationship between cannabis use and body mass index (BMI) over time in a nationally representative sample of 33,000 subjects.
Investigators reported that cannabis-using subgroups exhibited “appreciably attenuated BMI gain” over the trial period as compared to non-users and quitters, “with the largest attenuation seen in the ‘persistent use’ group.”
They concluded: “This new prospective study builds from anecdotes, pre-clinical studies and cross-sectional evidence on inverse associations linking cannabis use and obesity and shows an inverse cannabis–BMI increase association. Confirmatory studies with rigorous cannabis and BMI assays will be needed.”
Full text of the study, “Are cannabis users likely to gain weight? Results from a national 3-year prospective study,” appears in the International Journal of Epidemiology.