Because of excessive weight and other factors, nearly one in three adults in the United States is at risk. If you're one of the millions of Americans who is overweight and doesn't exercise, you may have diabetes and not even know it until your condition is advanced.
"Up to 20 to 25 percent who are newly diagnosed with diabetes already have complications," said Dr. Susan Spratt of the Duke University Health System.
The Centers for Disease Control released new statistics that show nearly 26 million Americans have type 2 diabetes. That's a jump of about 3 million from just three years ago.
More than a third of U.S. adults have high blood glucose levels that are just below the threshold to be considered full-blown diabetes.