In summary, a recent randomized trial in critically ill patients associated euglycemia with lower morbidity and mortality rates than with higher glucose values. This work follows a consistent body of evidence about the importance of euglycemia to achieve optimal patient outcomes in other acute settings. Nevertheless, clinicians in our multicenter survey2 did not consistently report application of this evidence in practice. Lack of clinician awareness of the ICU trial35 is unlikely; however, other plausible explanations include the short time since publication of this trial, uncertainty about the application of these results to noncardiac surgery patients or patients with short ICU stays, the challenge of achieving euglycemia in the ICU, concern about unrecognized hypoglycemia in critically ill patients, and a desire for more confirmatory evidence. Principles of behavior change mentioned earlier, and worth repeating, are that changing clinician behavior does not follow passive dissemination of information. The most effective strategies are interactive education, reminders, audit and feedback, and actively implemented, locally developed guidelines and protocols.14 Further, in the ICU, strategies to improve glycemic control may be more effective by using a collaborative and interdisciplinary approach, rather than relying on a physician-led initiative. Meanwhile, pending the completion of future randomized trials in heterogeneous ICU populations, a shift toward tighter glucose control requires being aware of ICU clinicians' beliefs and attitudes. Addressing these beliefs and attitudes could enhance the success of future clinical, educational, and research efforts to modify practitioner behavior and thereby improve the outcomes for critically ill patients.