Entertainment can be used to promote health. This book discusses a type of entertainment that revolves around three characters: the negative character, the transitional character and the positive character. This strategy is particularly effective in a context where health-related programs and publications do not attract the attention of the public. In fact, they follow a linear pattern based on the behaviorist stimulus-recitation principle. Faced with this situation of virtual indifference on the part of the target population, the author proposes entertainment as an approach likely to bring about behavioral change in individuals.