Gut and Psychology Syndrome is the groundbreaking book that introduced the GAPS™ (Gut and Psychology Syndrome and Gut and Physiology Syndrome) concept. First published in 2004 by Dr Natasha Campbell-McBride, this landmark work established a new understanding of the relationship between gut health, nutrition, and brain function, inspiring intense interest and research in human microbiome.
Since its publication, Gut and Psychology Syndrome has become an international classic. More than one million copies have been sold worldwide, and the book has been translated into 28 languages, allowing readers across the globe to access the GAPS Nutritional Protocol in their own language.
Over the past two decades, the GAPS™ concept has helped millions of people and has influenced practitioners, therapists, and families worldwide. This flagship book presents the scientific foundations, clinical experience, and practical dietary guidance supporting neurological, digestive, immune, and mental health.
Today, Gut and Psychology Syndrome remains the definitive introduction to Dr Natasha’s GAPS® concept. Continually read by new generations of practitioners and families, it stands as a timeless resource whose influence continues to grow around the world.






