Description
Book SynopsisWhy do we age? Is aging inevitable? Will advances in medical knowledge allow us to extend the human lifespan beyond its present limits? Because growing old has long been the one irreducible reality of human existence, these intriguing questions arise more often in the context of science fiction than science fact. But recent discoveries in the fields of cell biology and molecular genetics are seriously challenging the assumption that human lifespans are beyond our control. With such discoveries in mind, noted cell biologist William R. Clark clearly and skillfully describes how senescence begins at the level of individual cells and how cellular replication may be bound up with aging of the entire organism. He explores the evolutionary origin and function of aging, the cellular connections between aging and cancer, the parallels between cellular senescence and Alzheimer''s disease, and the insights gained through studying human genetic disorders--such as Werner''s syndrome--that mimic the
Trade Review"Clark effortlessly takes readers from the simple to the complex, from a discussion of single-celled organisms to human beings.... He also does a nice job of exploring the causes of Alzheimer's disease, various forms of cancer and an array of genetic disorders that afflict the young by making them age prematurely.... Neatly informative."--Publishers Weekly
"Why in spite of healthy, well-fed, well-watered lives do people age and die? The well-informed physician-researcher, William R. Clark, excitedly reveals new studies of progeric and normal mammals as he tracks the inevitable corollary to human life: the inexorable rhythmic march to human death."--Lynn Margulis, Distinguished University Professor, Department of Geosciences, University of Massachusetts, Amherst and co-author of What is Life" and What is Sex"
"Fascinating and informative.... One of the book's most engaging elements is Clark's ability to show how scientists think about problems and approaches in the field."--Booklist
Table of ContentsINTRODUCTION ; 1. Aging, Senescence, and Lifespan ; 2. The Nature of Cellular Senescence and Death ; 3. The Evolution of Senescence and Death ; 4. Of Embryos and Worms and Very Old Men: The Developmental Genetics of Senescence and Lifespan ; 5. Human Genetic Diseases that Mimic the Aging Process ; 6. Cycling to Senescence ; 7. Replicative Immortality: Cancer and Aging ; 8. Caloric Restriction and Maximum Lifespan ; 9. With Every Breath We Take: Oxidative Stress and Cellular Senescence ; 10. The Aging Brain ; 11. A Conditional Benefit
