Produced by Karen Pritzker and directed by James Redford, this smooth advocacy documentary is a primer on the Adverse Childhood Experiences Study, which found a dramatic correlation between early childhood trauma (exposure to sexual abuse, substance abuse, domestic violence, mental illness, incarceration, etc) and serious physical health problems later in life. Robert Anda and Vincent Felitti, doctors at the Centers for Disease Control, remember the revelatory impact of the study when they first completed it in the mid-90s, and Redford helpfully surveys contemporary programs and education initiatives that enable health professionals to diagnose stress in children, gather information about their family lives, and, in some cases, intervene. Doctors and health professionals interviewed portray childhood trauma as fairly common and its ill effects as astronomical; if they’re correct, the situation calls for a sweeping reassessment of preschool education.