The focus was on the therapeutic use of cannabis or its products, and they checked for changes in weight, waist size, body mass index (BMI), and body fat percentage. They collected information from the studies about their design, how long they followed participants, who the participants were, how much cannabis was used, changes in obesity measures, how they gathered data, what they found, and any limitations. The scientists used a tool called the Joanna Briggs Institute to check for bias risk.