Understanding Health Literacy and Health Numeracy. Understand important success factors in patients with Type 2 Diabetes. Numeracy and literacy independently predict the ability of patients with Diabetes to Identify Out-of- Range test results. Inadequate health literacy/numeracy is a major challenge in patients with type 2 diabetes. Diabetes self-management requires both knowledge of what to do and the ability to follow pharmacologic and lifestyle regimens. To successfully self-manage type 2 diabetes, patients must know how to monitor the disease, manage symptoms, carry out daily medical regimens, and interpret results of home-monitoring. Seven strategies to address low health literacy and numeracy in diabetes are outlined.