Observing that people change both physically and cognitively as they age, Posner suggests that each of us has, in succession, two separate selves - younger and older - with different abilities, interests, and behaviors, an insight that helps clarify a number of issues concerning the elderly.

Thanks to improved food, medicine, and living conditions, the average age of the population is increasing throughout the modern industrialized world. Yet, despite the recent upsurge of scholarly interest in the lives of older people and the blossoming of historical demography, little historical demographic attention has been paid to the lives of the elderly. A landmark volume, Aging in the Past marks the emergence of the historical demographic study of aging. Following a masterly explication of the new field by Peter Laslett, leading scholars in family history and historical demography offer new research results and fresh analyses that greatly increase our understanding of aging, historically and across cultures. Focusing primarily on post-Industrial Europe and the United States, they explore a range of issues under the broad topics of living arrangements, widowhood, and retirement and mortality. This important work provides a much-needed historical perspective on and suggests possible alternative solutions to the problems of the aged. Thanks to improved food, medicine, and living conditions, the average age of the population is increasing throughout the modern industrialized world. Yet, despite the recent upsurge of scholarly interest in the lives of older people and the blossoming of historical demography, little historical demographic attention has been paid to the lives of the elderly. A landmark volume, Aging in the Past marks the emergence of the historical demographic study of aging. Following a masterly explication of the new field by Peter Laslett, leading scholars in family history and historical demography offer new research results and fresh analyses that greatly increase our understanding of aging, historically and across cultures. Focusing primarily on post-Industrial Europe and the United States, they explore a range of issues under the broad topics of living arrangements, widowhood, and retirement and mortality. This important work provides a much-needed historical perspective on and suggests possible alternative solutions to the problems of the aged.

In Aging in World History, David G. Troyansky presents the first global history of aging. At a time when demographic aging has become a source of worldwide concern, and more people are reaching an advanced age than ever before, the history of old age helps us understand how we arrived at the treatment of aging in the modern world. This concise volume expands that history beyond the West to show how attitudes toward aging, the experiences of the aged, and relevant demographic patterns have varied and coalesced over time and across the world. From the ancient world to the present, this book introduces students and general readers to the history of aging on two levels: the experience of individual men and women, and the transformation of populations. With its attention to cultural traditions, medicalization, decades of historical scholarship, and current gerontology, Aging in World History is the perfect starting point for an exploration of this increasingly universal aspect of human experience.

The United States is in the midst of a major demographic shift. In the coming decades, people aged 65 and over will make up an increasingly large percentage of the population: The ratio of people aged 65+ to people aged 20-64 will rise by 80%. This shift is happening for two reasons: people are living longer, and many couples are choosing to have fewer children and to have those children somewhat later in life. The resulting demographic shift will present the nation with economic challenges, both to absorb the costs and to leverage the benefits of an aging population. Aging and the Macroeconomy: Long-Term Implications of an Older Population presents the fundamental factors driving the aging of the U.S. population, as well as its societal implications and likely long-term macroeconomic effects in a global context. The report finds that, while population aging does not pose an insurmountable challenge to the nation, it is imperative that sensible policies are implemented soon to allow companies and households to respond. It offers four practical approaches for preparing resources to support the future consumption of households and for adapting to the new economic landscape.

The process of aging is familiar to, and usually dreaded by, all of us. We all know what it feels like to grow older, but what exactly is aging, why does it happen, and can anything be done to slow or prevent it? An original treatment of human aging that draws on biomedical research and the natural history of animals and plants, Aging: A Natural History describes this biological phenomenon in fascinating detail, helping the reader to understand its complex processes. In the aging patterns of humans and many other species, biologists Robert E. Ricklefs and Caleb E. Finch find some answers to why aging must exist at all, and why it is so spectacularly different in different species. The authors ask a variety of compelling questions: How can processes that lead to death be such an integral part of life itself? Why do some species tend to die at an early age when close relatives may live much longer? Why do many species age, when others seem not to? And, perhaps most importantly, why is aging, which is so detrimental to the individual, maintained by natural selection? Finally, the authors consider the prospects for prolonging human life and improving the quality of life at older ages. Concluding that aging is induced both by environmental factors and by the biochemical processes normally present in all cells, they show aging to be an inevitable yet alterable part of life - a natural process that may limit activity but is not necessarily debilitating.

For those fortunate enough to reside in the developed world, death before reaching a ripe old age is a tragedy, not a fact of life. Although aging and dying are not diseases, older Americans are subject to the most egregious marketing in the name of "successful aging" and "long life," as if both are commodities. In Rethinking Aging, Nortin M. Hadler examines health-care choices offered to aging Americans and argues that too often the choices serve to profit the provider rather than benefit the recipient, leading to the medicalization of everyday ailments and blatant overtreatment. Rethinking Aging forewarns and arms readers with evidence-based insights that facilitate health-promoting decision making. Over the past decades, Hadler has established himself as a leading voice among those who approach the menu of health-care choices with informed skepticism. Only the rigorous demonstration of efficacy is adequate reassurance of a treatment's value, he argues; if it cannot be shown that a particular treatment will benefit the patient, one should proceed with caution. In Rethinking Aging, Hadler offers a doctor's perspective on the medical literature as well as his long clinical experience to help readers assess their health-care options and make informed medical choices in the last decades of life. The challenges of aging and dying, he eloquently assures us, can be faced with sophistication, confidence, and grace.

As the United States and the rest of the world face the unprecedented challenge of aging populations, this volume draws together for the first time state-of-the-art work from the emerging field of the demography of aging. The nine chapters, written by experts from a variety of disciplines, highlight data sources and research approaches, results, and proposed strategies on a topic with major policy implications for labor forces, economic well-being, health care, and the need for social and family supports.