Over the last two decades, the rates of heart attacks and strokes among diabetics fell by more than 60 percent, a new federal study shows. Today, roughly 1 in 10 U.S. adults has the disease, and it is the nation's seventh leading cause of death, according to the CDC. The obese are already at higher risk for heart attacks and strokes. The research suggested that vision and heart problems, leg and foot amputations and other diabetes complications were not necessarily inevitable. [...] insurance programs expanded coverage of blood sugar monitors and diabetes treatment. The researchers also looked at a less common complication, death caused by dangerous levels of blood sugar.