If you look around, you will notice that the avid cannabis user is usually not overweight. That is because cannabis is linked to aiding your body in regulating insulin while managing caloric intake efficiently. Regulate and prevent diabetes. With its impact on insulin, it only makes sense that cannabis can help regulate and prevent diabetes. Research conducted by the American Alliance for Medical Cannabis (AAMC) has linked cannabis to stabilise blood sugars, lower blood pressure, and improve blood circulation. Fight cancer. One of the biggest medical benefits of cannabis is its link to fighting cancer. There is a good amount of evidence that shows cannabinoids can help fight cancer or at least certain types of it.