The constellation of obesity, hypertension, dyslipidemia, and hyperglycemia within an individual, is referred to as metabolic syndrome (MetS), and is increasing in prevalence in the United States and world-wide. Patients with MetS have a heightened probability of developing type 2 diabetes and atherothromotic disease. In this book, the authors present current research in the study of the classification, risk factors and health impact of metabolic syndrome. Topics include the pathophysiological changes to the vasculature and inflammation within the skeletal muscle that accompany MetS; metabolic syndrome in children; role of triglyceride modifier genetic variants in the development of MetS; subclinical atherosclerosis and risk of stroke in metabolic syndrome; nuclear receptors and MetS; vascular repair by endothelial progenitor cells in an experimental model of metabolic syndrome; chromium mediations of glucose tolerance; and sleep disturbances and glucose variability.