This textbook is directed to higher secondary school students and presents general health concerns in a student-centered, active learning approach. Each unit provides unsolved problems for the student to investigate; each chapter contains one or more projects for student participation, a chapter summary, and an annotated list of additional reading materials. Other features include the extensive use of graphs, charts and diagrams, action photos and cartoons, to explain and expand the text, biographies of contributors to medical science, pronunciation guides for difficult names and terms, and the italicizing and defining of important concepts and terms of health science. The text consists of seven units: (1) "How Your Body Works," (2) "Health and Appearance in Daily Life," (3)"Understanding Your Feelings," (4) "Dangerous Habits," (5) "Understanding Disease," (6) "Family Health and Safety," and (7) "Health and the Community." (MB)