Sandra L. Bloom

Sandra L. Bloom, M.D., is a psychiatrist, author, public health scholar, and organizational consultant whose work for more than fifty years has explored what happens to people and human systems under conditions of trauma, chronic stress, violence, and adversity—and what makes recovery, healthier development, and democratic practice possible.

She is the originator of the Sanctuary Model, one of the pioneering trauma-informed approaches to organizational change, and the creator of Creating Presence, a online framework for helping organizations develop safer, more democratic, and more relational ways of working. Her work has been used in mental health, child welfare, education, health care, residential treatment, justice, and other human-service settings in the United States and internationally.

Dr. Bloom’s early clinical work with survivors of trauma led her to a larger question: why do organizations and institutions so often repeat the very patterns of coercion, fragmentation, secrecy, and power imbalance that they are trying to heal? That question became the foundation of decades of writing, teaching, consultation, and research into the ways trauma, memory, power, attachment, leadership, and group behavior interact within living human systems.

Her books include Creating Sanctuary, Destroying Sanctuary, and Restoring Sanctuary, which examine the effects of trauma not only on individuals but also on the organizations designed to care for them. Her more recent work extends that inquiry into the developmental and evolutionary challenges facing human societies.

In her latest work, The Social Immune System: How Predatory Power Captures Democracy—and How We Can Learn to Resist, Dr. Bloom brings together insights from psychiatry, developmental science, trauma theory, history, biology, and organizational life to ask why human beings repeatedly surrender power to people who may harm them—and how societies can strengthen the capacities needed to recognize danger, preserve shared reality and memory, contain destructive power, and repair damage.

Dr. Bloom has taught and lectured nationally and internationally and serves on the faculty of Drexel University’s Dornsife School of Public Health. She is a past president of the International Society for Traumatic Stress Studies.

Across all of her work runs one central concern: how human beings can learn to use power more wisely and create systems capable not merely of surviving adversity, but of learning, growing, and becoming more humane.