humans and other primates alike are afflicted by unavoidable sources of stress that the authors describe as "brainpain." To cope with this affliction people seek to "brainsoothe." We humans use religion and its social structures to induce brainsoothing as a relief for innate anxiety. How we do this is the subject of this groundbreaking book. In a concise, lively, accessible, and witty style, the authors combine zoom- lens vignettes of religious practices with discussions of the latest research on religion's neurological effects on the brain. Among other topics, they consider religion's role in providing positive socialization, its seeming obsession with regulating sex, creating an afterlife, how religion's rules of behavior influence the law, the common biological scaffolding between nonhuman primates and humans and how this affects religion, a detailed look at brain chemistry and how it changes as a result of stress, and evidence that the palliative effects of religion on brain chemistry is not matched by nonreligious remedies. Concluding with a checklist offering readers a means to compute their own "brainsoothe score," this fascinating book provides key insights into the complexities of our brain and the role of religion, perhaps its most remarkable creation.