This book will provide readers with up-to-date information on thyroid diseases, obesity and metabolic syndrome. The innovative element is the presentation and exploration of possible connections linking thyroid diseases and metabolism dysfunction. Starting from the classification and diagnosis of thyroid diseases, obesity and metabolic syndrome, techniques to study and treat each of the mentioned diseases are given in an easy-to-use way. This volume will be a useful tool for endocrinologists, diabetologists, dieticians, and any professionals involved in the treatment of thyroid diseases.