Approximately 26 million American adults over age 20 have diabetes,compared to 23.6 million in 2008—a 9 percent jump, according to estimates released Wednesday by the U.S. Centers for Disease Control and Prevention. In total, more than 100 million Americans now have diabetes or prediabetes, Diabetes arises when the body has trouble producing or using the hormone insulin, which leads to the buildup of sugar in the blood. Diabetics are at increased risk of heart disease, stroke, high blood pressure, blindness, kidney disease, and amputations. At least 90 percent of those affected have type 2 diabetes, which is linked to obesity and inactivity. About 79 million Americans, meanwhile, have prediabetes, which means their blood sugar is elevated but does not meet the threshold for a diabetes diagnosis. Most people with prediabetes develop full-blown diabetes within 10 years, unless they lose 5 to 7 percent of their body weight, Bloomberg reports. "These distressing numbers show how important it is to prevent type 2 diabetes and to help those who have diabetes manage the disease," Ann Albright, director of the CDC's Division of Diabetes Translation, said in an agency statement. On a positive note, she said the findings also suggest that people with diabetes are living longer than ever before.