NIH has stopped one treatment within the ACCORD study, a large, ongoing North American clinical trial of diabetes and cardiovascular disease, 18 months early due to safety concerns after review of available data, although the study will continue. In this trial of adults with type 2 diabetes at especially high risk for heart attack and stroke, the medical strategy to intensively lower blood glucose (sugar) below current recommendations increased the risk of death compared with a less-intensive standard treatment strategy.