An Observational Study on Efficacy and Safety in Subjects Using Levemir® for the Treatment of Insulin Dependent Type 1 or Type 2 Diabetes

Inclusion Criteria: * Any subject with Type 1 or Type 2 diabetes mellitus is eligible for the study, including newly-diagnosed subjects who have never received insulin or an insulin analogue before. The selection of the subjects will be at the discretion of the individual physician Exclusion Criteria: * Subjects who are unlikely to comply with protocol, e.g., uncooperative attitude, inability to return for the final visit * Currently being treated with insulin detemir * Previously enrolled in this study * Hypersensitivity to insulin detemir or to any of the excipients * Pregnancy, breast-feeding, the intention to become pregnant or judged not to be using adequate contraceptive measures.