Book excerpt: How does the law of the European Union affect health law and policy? At first sight, it seems limited. However, despite its restricted formal competence, the EU has recently become increasingly involved in the health field. Litigation based on EU law has resulted in a 'right to receive health care services' across national boundaries which may have huge practical implications for national health systems. The EU has promulgated legislation regulating clinical research, and the marketing of pharmaceuticals; patients' rights are affected by EU legislation on data protection and product liability; the qualifications of health care professionals are legally recognised across the EU; and the EU has acted to promote public health. This book explores the various impacts of measures of EU law on national health law and policy. Through elaboration of selected examples, the authors show that, within the EU, health law cannot be regarded as a purely national affair.