Cannabis smokers are 65 percent more likely to develop high blood-sugar levels, but not necessarily full-fledged diabetes - according to a study released in August.

"Specifically," according to the study by the University of Minnesota School of Public Health, "the occurrence of pre-diabetes in middle adulthood was significantly more likely among individuals who reported using marijuana more than 100 times by young adulthood. These results contrast with previous findings on marijuana use and metabolic health."

No, smart ass. Sugary munchies aren't necessarily to blame.

One possible explanation? Marijuana might have more effect on the blood sugar of people in the pre-diabetes range than those with full, type-two diabetes.

Conversely, according to the study, people excluded from the research had higher levels of marijuana use, a greater number of diabetes risk factors, and a greater likelihood of developing the disease.

The findings raise questions about the role marijuana plays in metabolic health, which will hopefully be addressed by additional research.

"It is unclear how marijuana use could place an individual at increased risk for pre-diabetes yet not diabetes," writes Mike Bancks, who led the study.

Without intervention, pre-diabetes often becomes type 2 diabetes within a decade.