The new generation of wearable personal eHealth systems has to be affordable, user-friendly, "invisible", autonomous in terms of power consumption and able to assist individuals in their own health management. Major challenges are ahead such as further research and development, user acceptance and trust, cost-effectiveness and business models. Intelligent biomedical clothing and biomedical sensors are becoming major driving forces for cutting-edge developments. The synergy and close collaboration of all involved disciplines and sectors is of paramount importance. This book consists of papers describing developments and trends all over the world in the areas of smart wearable monitoring and diagnostic systems, smart treatment systems, biomedical clothing and smart fibres and fabrics. It covers also non-research aspects such as citizens and patients needs, interoperability, risk management and market perspectives. The chapters are preceded by a short executive summary which highlights the main issues, findings and conclusions for the convenience of the reader. The participation of the major actors involved in research, development, decision making and business should make this book unique and pioneer in the field.