Mate, many doctors say diabetes is irreversible. But I say bollox, allow me to explain.
Woman in my life, an amazing woman at that, was diagnosed with type 2 diabetes, told needs to take meds; metphormin.
Now being the woman she is she googled and called and emailed and wrote and everything in between and subsequently came across a doctor in Newcastle who thinks he can reverse it through diet. And boy did it work.
Her doctor told her not to do it. It's dangerous not take these meds he said. 3 months on it, she went back and asked to be tested again. Results have been counted and verified; normal. According to the tests, she doesn't have diabetes and certainly shouldn't be on any medication for it.
Please, please, try it. Do it and see what happens.
http://www.diabetes.co.uk/diet/newcastle-study-600-calorie-diet.html