The current exposure of human populations to toxic metals makes the prevention and control of such exposures crucial. Biomarkers are undoubtably recognized as vital tools to achieve these goals. This book is for researchers, toxicologists, physicians, pharmacologists and those working in governmental regulatory agencies and other public health fields. The first part of this book covers general aspects of biomarkers of toxic metals, while parts 2 and 3 cover biomarkers of xenobiotic metals and essential metals with potential for toxicity, respectively. In part 4, novel approaches to metal biomarkers are focused.