Number of Americans with diabetes up to 29 million, CDC estimates

More than 29 million people in the U.S., 9.3% of the population, have diabetes, according to a new estimate from the Centers for Disease Control and Prevention.

That's an increase from the agency's previous estimate of 26 million in 2010, a press release said. According to other calculations in the National Diabetes Statistics Report, 1 in 4 diabetes cases are undiagnosed and 86 million U.S. adults have prediabetes.

The full report is online.