If you have early onset type 2 diabetes, then a raw food diet can help with blood sugar control. In some cases people find it prevents them needing to start insulin injections, and they can control their type 2 diabetes with just diet and possibly tablets.
However if you've got type 1 (probably more likely as you're 17) then a raw food diet wouldn't provide any extra benefit to diabetic control than any other healthy diet low in carbohydrates with a high glycemic index. Even if you did go on such a diet it would be very important that you still injected, as in type 1 your body cannot provide a basal level of insulin. If you tried to control it using just the diet then you would eventually go into a coma. You may find that under the diet your diabetes management would need to change slightly - it would probably be a good idea to talk it through with your specialist first!
If you do move over to a raw food diet it might be a good idea to assess your nutrient intake on it. It is difficult to get enough vitamin B12, iron, calcium and protein. Be careful of some of the raw food websites, they can be a bit passionate about the whole raw food thing and some make claims about it curing diabetes etc that isn't true at all.
Good luck!
