The collected chapters and the authors contributing to this initial volume represent a transdisciplinary approach to analyze and develop novel approaches to understand and solve what, up to now, is a globally refractory problem. The book is written to be understandable and informative to individuals from all concerned disciplines. It should serve to orient students, investigators, nutritionists, public health officials, community planners, clinicians and policy makers to the extent of the problem, its multiple dimensions and potential approaches for research and corrective interventions.