The fifties decade, we're reminded, has been transformed ""from old age to middle age, from a passive to an active period of life""--and the specific physical and emotional concerns of that decade are the subject of this AMA guide. According to the research findings presented, certain identifiable traits--good health, an ability to cope with new physiological limitations, a flexible attitude toward transitions and life-altering events, the pursuit of individual interests, a solid sense of the future--can all affect ""the depth and richness of our lives."" There is helpful, detailed discussion of various physical matters--such as normal body changes, menopause and the male climacteric, exercise, nutrition and sexual functioning--and also of emotional developments, including widowhood and facing personal mortality. A healthy benefit is to banish some well-entrenched myths--e.g., that the majority of middleaged people can expect to undergo serious psychological crises. Sound advice for a certain age, then--backed up with informative reports on the latest medical findings.