Type-2 Diabetes is a severe health problem worldwide. Patients with this disease have 2-4 times greater risk of renal and cardiovascular complications, mortality and morbidity. Comprehending the etiology of the onset and advancement of this disease is crucial to avoid its complications and delay the progress. This book covers important topics under treatments and prevention. The prevention and treatments contains detailed accounts regarding bariatric surgery, insulin therapy, pharmacological and non-pharmacological treatments. The aim of this book is to provide the readers with helpful knowledge regarding the field and assist clinicians and researchers.