Lead and Reproduction


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Lead Toxicity


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Metals, Fertility, and Reproductive Toxicity


Book Description

Environmental endocrine disruptors have been at the heart of discussions about chemicals and their effects on fertility, but the focus has been on organic compounds and the role of metals has been largely overlooked - until now. Taking an organ-system-based approach, Metals, Fertility, and Reproductive Toxicity examines the effects of metals found in the everyday environment on fertility rates in humans and animal populations. This volume summarizes and evaluates the literature in the area of metal effects on fertility and reproduction in humans, laboratory animals, and wildlife. International experts have contributed chapters that explore how the ovary, testes, uterine system, and neuroendocrine system, among others, respond to metal exposure. Reviewing both current knowledge and cutting edge data, the chapters focus on either a particular metal or a particular population. A massive amount of data on this subject has been generated, summarized, and reviewed over the years. While there are many books available on metals toxicity and on reproductive toxicity, no current book explores both in the same volume. Culling information from throughout the literature, Metals, Fertility, and Reproductive Toxicity supplies an in-depth look at the role of metals in endocrine disruption and the spectrum of mechanisms involving metals that can influence reproduction.




The Health Consequences of Involuntary Exposure to Tobacco Smoke


Book Description

This Surgeon General's report returns to the topic of the health effects of involuntary exposure to tobacco smoke. The last comprehensive review of this evidence by the Department of Health and Human Services (DHHS) was in the 1986 Surgeon General's report, The Health Consequences of Involuntary Smoking, published 20 years ago this year. This new report updates the evidence of the harmful effects of involuntary exposure to tobacco smoke. This large body of research findings is captured in an accompanying dynamic database that profiles key epidemiologic findings, and allows the evidence on health effects of exposure to tobacco smoke to be synthesized and updated (following the format of the 2004 report, The Health Consequences of Smoking). The database enables users to explore the data and studies supporting the conclusions in the report. The database is available on the Web site of the Centers for Disease Control and Prevention (CDC) at http://www.cdc.gov/tobacco.




Hormonally Active Agents in the Environment


Book Description

Some investigators have hypothesized that estrogens and other hormonally active agents found in the environment might be involved in breast cancer increases and sperm count declines in humans as well as deformities and reproductive problems seen in wildlife. This book looks in detail at the science behind the ominous prospect of "estrogen mimics" threatening health and well-being, from the level of ecosystems and populations to individual people and animals. The committee identifies research needs and offers specific recommendations to decision-makers. This authoritative volume: Critically evaluates the literature on hormonally active agents in the environment and identifies known and suspected toxicologic mechanisms and effects of fish, wildlife, and humans. Examines whether and how exposure to hormonally active agents occursâ€"in diet, in pharmaceuticals, from industrial releases into the environmentâ€"and why the debate centers on estrogens. Identifies significant uncertainties, limitations of knowledge, and weaknesses in the scientific literature. The book presents a wealth of information and investigates a wide range of examples across the spectrum of life that might be related to these agents.







Lead-Induced Reproductive Toxicity in Rat


Book Description

Adverse trends in reproductive health of wildlife and humans are significantly increased during the last few years. It is widely acknowledged that one of the possible reasons for the deteriorated reproductive health is exposure to a range of occupational and/or environmental contaminants. Among the contaminants, lead (Pb) is one of the non-essential metal toxicants and is mainly used in the manufacture of lead-based storage batteries, painting pigments, solder, automobiles, radio-activity shields. It is believed that Pb is non-biodegradable, immutable and bio-accumulative in nature and thus its release into the environment tends to persist inadequately and accumulate in the living organisms throughout food chain. Thus, it seems apparent that exposure to lead is implicated in serious health hazards in animals and humans. There is a lack of literature data related to the effect of Pb on male reproduction, particularly at the dose levels occurring in drinking water in wide areas of India and in other countries. The present book focuses on reproductive toxicity in rats exposed to Pb during perinatal/adult period.




How Tobacco Smoke Causes Disease


Book Description

This report considers the biological and behavioral mechanisms that may underlie the pathogenicity of tobacco smoke. Many Surgeon General's reports have considered research findings on mechanisms in assessing the biological plausibility of associations observed in epidemiologic studies. Mechanisms of disease are important because they may provide plausibility, which is one of the guideline criteria for assessing evidence on causation. This report specifically reviews the evidence on the potential mechanisms by which smoking causes diseases and considers whether a mechanism is likely to be operative in the production of human disease by tobacco smoke. This evidence is relevant to understanding how smoking causes disease, to identifying those who may be particularly susceptible, and to assessing the potential risks of tobacco products.