Diabetes type 2 is created by a heavy vitamin D3 deficiency, and doses between 125mcg/5,000 iu and 250mcg/10,000 iu a day will lower insulin resistance very quickly. D3 is made by sun exposure on the skin, 20 minutes in full sun with good skin exposure will give 10,000 ie naturally. A dietary supplement is necessary to correct the vitamin deficiency.
Weightloss and a proper 30% carb, 40%protien 30% good fats/cholesterols will bring it down to curing after fixing the D3 deficiency. Very good news, new, google it.
With type 2 diabetes it's important to look at the diet, emotional issues (yes!) excercise.. -and- what supplements can help. Magnesium deficiency and the like is also implicated in syndrome X conditions (type 2 is a major one of these). Here's a good, short summary on things that help syndrome X (insulin resistance) http://www.livehealthytoday.org/pages/snydrome-x.html