Some inadvisable--or impractical--tips for life-extension enthusiasts. Morgan, a psychologist specializing in gerontology, never decides whether he's writing an overview of developments in the longevity field, or a how-to guide. ""Aging may be defined as a series of disadvantaging events that normally occur in our bodies over time,"" he asserts; and he proceeds to identify nine or so aspects of aging, some of which can be modified. These include: hereditary factors (nothing to be done there); state of mind (think young--hypnosis may help); nutrition (protein needs ebb and flow through life); temperature (to achieve low body temperature associated with longevity, Morgan looks into some hazardous drug therapies); and numerous environmental factors (try not to live near pollution, and to at least vacation at a high altitude; also, love well and work hard). The next step, to Morgan, is the development of ""therapeutic programs for individuals who want to monitor and change their rate of aging."" In toto, this is less dangerous to your health than the current best-seller, Life Extension--but less roundly and reliably informative than Kenneth Pelletier's Longevity (1981) and less beneficial than a straightforward guide to good health.