Normal glucose levels should be between Glyco Modemilligrams per deciliter. Medications and lifestyle choices play a major role in determining glucose levels. Type 2 diabetes arises when the body doesn't respond well to insulin or doesn't produce enough of it. The health impacts of type 2 diabetes can be serious, so seeking medical help is important. Common symptoms of this condition include frequent urination, fatigue, dry mouth, itchy skin, and tingling in the feet and hands.