Dr. Campbell-McBride graduated with Honours as a Medical Doctor in 1984 from Bashkir Medical University in Russia. In the following years she gained a Postgraduate Degree in Neurology.After practicing for five years as a Neurologist and three years as a Neurosurgeon, she started a family and moved to the UK. It was during this time that Dr. Campbell-McBride developed her theories on the relationship between neurological disorders and nutrition, and completed a second Postgraduate Degree in Human Nutrition at Sheffield University, UK. She has specialized in using nutritional approach as a treatment, and has become recognized as one of the world's leading experts in treating children and adults with learning disabilities and other mental disorders, as well as children and adults with digestive and immune disorders.In 2004 she published her first book Gut And Psychology Syndrome.

Natural Treatment Of Autism, ADHD, Dyslexia, Dyspraxia, Depression And Schizophrenia where she explores the connection between the patient's physical state and brain function. The book gives full details of the GAPS Nutritional Protocol , highly successful in treating patients with chronic diseases. A second edition was published in 2010. The concept of GAPS has become a global phenomenon and the book has been translated into 20 languages.She is also the author of Put Your Heart in Your Mouth (rev ed. 2016), and Vegetarianism Explained published in 2017. She is also a Member of The Society of Authors, The British Society for Environmental Medicine, and a Board Member of the Weston A Price Foundation. She is a regular contributing health editor to a number of journals, magazines, newsletters, and radio programmes around the world.