Christopher Keroack, MD, IFMCP

Physician, Functional Medicine Leader, Author

Christopher Keroack, MD, is a board-certified physician and nationally recognized leader in functional and longevity medicine, known for advancing a systems-based approach to health that challenges the limitations of conventional care.

As medical director of the New England Center for Functional Medicine, he focuses on identifying and correcting the root drivers of metabolic dysfunction, inflammation, hormonal imbalance, and accelerated aging—reframing chronic, complex conditions through a lens of biological precision and adaptability.

With more than thirty years of clinical experience, Dr. Keroack integrates advanced diagnostics, metabolic strategy, and performance-oriented therapeutics to restore resilience and elevate long-term health. His work extends beyond treatment, offering a structured model for how modern medicine can evolve toward optimization rather than disease management.

In Changing Directions, now in its tenth-anniversary edition, he introduces a framework that translates complex physiology into clear, actionable pathways for sustained vitality, performance, and balance.

Dr. Keroack’s work represents a decisive shift in medicine—away from reactive care and toward a disciplined, personalized system designed to build health from its foundation.