According to study published in Diabetologia, both current and former marijuana users have a higher chance of developing “prediabetes,” which is poor blood sugar control. This is one of the many possible adverse side effects of marijuana being studied and reported on in the recent years.

The researchers on the study gathered data from the Coronary Artery Risk Development in Young Adults study. Overall, they found that 65 percent of current marijuana users were at great risk of developing prediabetes. Previous long-term users were at a 45 percent risk level. Although these rates are high for prediabetes, there was no direct link between marijuana and type 2 diabetes, which is the most common form.

The study also looked at other aspects that could be affecting the development of prediabetes, including race, age and weight. These things do play a role in other types of diabetes so it was important to be noted.

The researchers on the study stated that it would be helpful if future studies were done on topics related to marijuana use and metabolic health.