First, there is no cure for diabetes. Any positive results from the HCG diet in regards to diabetes could be purely coincidental and obviously cannot be guaranteed.
That being said, some patients with type 2 diabetes have found that after completing the HCG diet, their diabetes has been far more manageable. People with type 1 diabetes do not usually see much of a change after completing the HCG protocol, but it is safe for diabetics to do the HCG drops. However, it is imperative that you consult your health care provider before beginning this or any diet, especially if you have diabetes. Any results one way or the other will depend completely on your body, and everyone’s body is different.
If you recently were diagnosed as being pre-diabetic, the HCG diet drops would be a good way to get your weight down and get your blood sugar under control before it turns into type 2 diabetes. Just make sure (again) that you talk to your doctor first.