Aging and Vulnerability to Environmental Chemicals Age-related Disorders and Their Origins in Environmental Exposures

Many of the world's societies face an unprecedented demographic challenge. They are aging at such a rapid rate that it threatens to overwhelm their resources and economies. Of all the problems this creates, the foremost is declining health. As populations age, they place rising demands on medical care systems but no longer produce the wealth required to sustain them. Aging is not a disease. We possess no therapies for it, only for its manifestations. However, the stresses it imposes on society would be more manageable if the burden of disease and disability could be diminished. This book focuses on how chemical agents may affect the health of aging populations. Most research in this area has focussed on early development, but it is not the only life stage where responses to the adverse effects of chemicals are intensified. Vulnerability to toxins climbs again late in life and, in many ways, repeats the imperfect defences deployed by the immature organism. One feature common to both early and late phases is a reduced capacity to compensate for damage. In the first case, the functional mechanisms have yet to evolve. In the second, they have passed into a post-mature decline. The chemical revolution has flooded the world with new chemicals that penetrate every aspect of our lives. Although they bring significant benefits, they exact a heavy price. We are now exposed to thousands of chemicals whose toxic properties still elude us and whose chemical signatures can be found in our tissues. By improving our knowledge of how our contaminated environment contributes to declining health, we can act to avert further strains on our beleaguered societies. Written by experts on the environmental exposures that jeopardize optimal aging, this book serves as an excellent foundation for policy decisions. It will be read primarily by those engaged in environmental or aging research. More general readers will benefit from learning about the chemicals to avoid.