With the growing size of the elderly population comes an increased interest in aging as a subject of research and study. Human Aging: Biological Perspectives is written for the one-quarter or one-semester introductory level course and is aimed at students with little or no science background. The main structure of the text follows a body systems approach. In addition to the introductory chapter and a chapter covering molecules, cells, and the theories of aging, each body system is covered in its own chapter.