This volume outlines what is meant by terms such as 'evidence based practice', 'systematic review', 'efficacy', 'effectiveness', etc. It summarises, in a systematic fashion, the current evidence on diabetes prevention and care to enable the reader to improve their professional practice. Furthermore, it promotes a critical attitude to the assessment of evidence and engenders enthusiasm for 'lifelong learning'. The book also advises clinicians on what to do when there is little available evidence. Chapters consider the evidence base for the definition and classification of diabetes, as well as prevention, identification, treatment, education in Type 1 and Type 2. The final chapters look at the practical implications of translating this evidence into practice in different environments with different health care systems, different economic levels, etc.