Zinc and diabetes

Can Zinc help lower my blood glucose? I have been reading a lot on Zinc and am confused.

Type 2 diabetes is associated with many long-term complications and the only way to prevent these are to ensure that your blood sugar is well controlled. Today, the treatments for type 2 diabetes includes medications, a change in diet and exercise. There is a lot of literature on Zinc and its miraculous properties. Zinc deficiency is very rare and usually only seen in ill hospitalized patients or those who are malnourished. In North America, Zinc deficiency is rare. Taking extra zinc supplement is waste of money. As far as diabetes is concerned, zinc has no affect on blood sugar. 

Best advice take the medications prescribed by your doctor, lose weight, avoid excess sugar and exercise on a regular basis. Zinc is for people who are clueless about life and whine about everything on this planet.