This book is a comprehensive review of the recent research on the lipotoxicity-related mechanisms in obesity and the development of new treatment strategies. In this second edition, the possible molecular treatment methods and their recent clinical approaches are discussed in addition to the basic mechanisms that are available and thoroughly reviewed previously. Moreover, all chapters have been reviewed, according to the current concepts and seven new chapters are added, covering obesity-related epigenetic modifications, senescence, obesity-related cancer development, endocrine disruptors, as well as nanotechnology-based clinical approaches.