ATLANTA (AP) -- The nation's obesity epidemic is exacting a heavy toll: The rate of new diabetes cases nearly doubled in the United States in the past 10 years, the government said Thursday.

The highest rates were in the South, according to the first state-by-state review of new diagnoses. The worst was in West Virginia, where about 13 in 1,000 adults were diagnosed with the disease in 2005-07. The lowest was in Minnesota, where the rate was 5 in 1,000.

Nationally, the rate of new cases climbed from about 5 per 1,000 in the mid-1990s to 9 per 1,000 in the middle of this decade.

Roughly 90 percent of cases are Type 2 diabetes, the form linked to obesity.

The findings dovetail with trends seen in obesity and lack of exercise -- two health measures where Southern states also rank at the bottom.

The study, led by Karen Kirtland, of the Centers for Disease Control and Prevention, provides an up-to-date picture of where the disease is exploding. The information should be a big help as the government and health insurance companies decide where to focus prevention campaigns, Petersen said.

Diabetes

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was the nation's seventh-leading cause of death in 2006, according to the CDC. More than 23 million Americans have diabetes, and the number is rapidly growing. About 1.6 million new cases were diagnosed among adults last year.

Type 2 diabetics do not produce or use insulin, a hormone needed to convert sugar into energy. The illness can cause sugar to build up in the body, leading to complications such as heart disease, blindness, kidney failure and poor circulation that leads to foot amputations.