"In the early to mid-twentieth century, the governments of Ecuador and Guatemala sought to expand Western medicine within their countries, with the goals of addressing endemic diseases and improving infant and maternal health. These efforts often clashed with indigenous medical practices, particularly in the rural highlands. Drawing on extensive, original archival research, historian David Carey Jr. shows that indigenous populations embraced a syncretic approach to health, combining traditional and new practices. At times, the governments of both nations encouraged--or at least allowed--such...