Number of diabetic Americans could triple by 2050

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As many as 1 in 3 U.S. adults could have diabetes by the year 2050, federal officials announced Friday, in a dramatic revision of earlier projections.

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ATLANTA (AP) — As many as 1 in 3 U.S. adults could have diabetes by the year 2050, federal officials announced Friday, in a dramatic revision of earlier projections.

The Centers for Disease Control and Prevention estimate that 1 in 10 have diabetes now, but the number could grow to 1 in 5 or even 1 in 3 by mid-century if current trends continue.

"This is alarming," said Ann Albright, director of the CDC’s Division of Diabetes Translation.

The agency’s projections have been a work in progress. The last revision put the number at 39 million in 2050. The new estimate takes it to the range of 76 million to 100 million.

An estimated 24 million Americans have diabetes currently.

The new CDC calculation accounts for people who have diabetes but are undiagnosed — a group that wasn’t figured into earlier estimates, explained Edward W. Gregg, chief of the CDC branch that handles diabetes epidemiology and statistics.

Also, the researchers used new population growth estimates for the elderly and minorities, who have higher rates of Type 2 diabetes, he said.

One more factor: Diabetics are living longer, thanks to improvements in medical care, he added.

"Not all of the increase in prevalence is a bad thing," said Dr. Sue Kirkman, the American Diabetes Association’s senior vice president of medical affairs and community information.

Diabetes is a disease in which the body has trouble processing sugar. It was the nation’s seventh leading cause of death in 2007.

In the classic form of diabetes, traditionally diagnosed in children or young adults, the body does not produce enough of a hormone called insulin to help sugar get into cells. That’s Type 1 diabetes.

Another form of diabetes, Type 2, now accounts for about 95 percent of cases. In that kind, the body’s cells resist insulin’s attempts to transport sugar. Type 2 is most common in people who are overweight and obese, in people 60 and older, and in African-Americans and other minority groups.

The growth in U.S. diabetes cases has been closely tied to escalating obesity rates. Recent CDC data suggests obesity rates may have recently leveled off. But the new estimates should hold up even if obesity rates remain static, CDC officials said.

The CDC is the main source for national disease statistics, and the agency seems to have done a thoughtful job in putting together these latest projections, Kirkman said. Still, she acknowledged being a little startled by the size of the new numbers.

"The magnitude is a bit surprising. But the trend is not" she said.

The new estimates were published online Friday by the journal Population Health Metrics.

Copyright 2010 The Associated Press.

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