"Hixon Fellowship report." Includes bibliographical references.

Introduction -- Detection of lead poisoning: a multi-stage process -- Early evidence of effects of lead poisoning: 200 B.C. and onward -- When the abnormal is the norm: overlooking the impact of environmental hazards -- Recognizing and reacting to the threat of environmental lead poisoning contamination -- Lead poisoning and children -- Effects on other vulnerable populations: gender variability -- Role of genetics in variability of susceptibility to lead poisoning -- Variation by demographics and geography -- Higher blood lead levels in urban communities -- Impact of diet in elevated blood lead levels -- Example of concentrations of elevated blood lead levels in an inner city neighborhood -- Lead: one substance but many different environmental pathways -- Three key pathways: air, soil and water -- Lead and mixtures -- Outcomes and further questions from lead poisoning research and policy -- trend of decreasing standards -- Lead poisoning and the regulatory process -- What, if any, are acceptable dose levels? -- Lessons from lead.