The biggest declines were in the rates of heart attacks and deaths from high blood sugar, which dropped by more than 60 percent from 1990 to 2010, the period studied. While researchers had had patchy indications that outcomes were improving for diabetic patients in recent years, the study, published in The New England Journal of Medicine, documents startling gains.
“This is the first really credible, reliable data that demonstrates that all of the efforts at reducing risk have paid off,” said Dr. David M. Nathan, director of the Diabetes Center at Massachusetts General Hospital, who was not involved in the study. “Given that diabetes is the chronic epidemic of this millennium, this is a very important finding.”