This best-selling text continues to be the only reference to bring together in a single volume the latest clinical techniques and research findings that direct evidence-based clinical practice for lactation consultants and specialists. This text contains a clear clinical focus and over 2,000 research studies support the clinical recommendations in this book. The Fourth Edition has been completely revised and updated to reflect the worldwide expansion of the lactation specialist role. New content on obstetrical issues, especially the importance of skin-to-skin care has been added and important concepts discussed in chapters are summarized at the end of each chapter. Key features throughout include key concepts, internet resources, evidence-based tables and boxes.