Credit: AP A new study from the Johns Hopkins Bloomberg School of Public Health found adults are not doing an effective job controlling blood sugar levels which cause diabetes. A co-author of the study, Elizabeth Selvin, a professor in the Bloomberg School’s Department of Epidemiology, studied two decades worth of government data involving 7,000 diabetic patients, ending in 2018. "We had a peak of good glucose control in 2010, around 60%. Now we are back down to 50% of people with Type 2 diabetes with what we consider good glucose controls," Selvin told WBAL News Radio. Selvin said the decline is due in part to the quality of diabetes control drugs, but she notes those drugs have improved over the last few years.