Dr. Campbell-McBride graduated with Honours as a Medical Doctor in 1984 from Bashkir Medical University in Russia. She gained a Postgraduate Degree in Neurology and completed a second Postgraduate Degree in Human Nutrition at Sheffield University, UK.

In 2004 she published a book Gut And Psychology Syndrome. Natural Treatment Of Autism, ADHD, Dyslexia, Dyspraxia, Depression And Schizophrenia. The book explores the GAPS Nutritional Protocol, highly successful in treating patients with learning disabilities and other mental problems. A second edition was published in 2010, and has been translated into sixteen languages.

In her clinic Dr Campbell-McBride works with patients with heart disease, high blood pressure, arrhythmia, stroke and other complications of atherosclerosis. She is acutely aware of the confusion about nutrition and these conditions, spurring an intensive study into this subject. The result of this study is her book Put Your Heart in Your Mouth! What Really is Heart Disease and what can we do to Prevent and Even Reverse it. The book was published in December 2007 and a second addition in March 2016.
Her new book Vegetarianism Explained has come out in 2017. Dr Campbell-McBride has been working with many young people who have chosen a plant-based life style and as a result became very ill. This led to an intense study into the value of plant foods versus animal foods, which resulted in this book. The book explains the health implications and dangers of vegetarianism.

Dr Natasha is an organic farmer. On her 28 acre farm in Norfolk she and her family have cows, goats, pigs, chickens, ducks, turkeys, peacocks, geese, bees, gardens and orchards. Through WWOOF (World Wide Opportunities on Organic Farms) the farm is used as an educational platform to teach organic farming to young people from all over the world.
Dr Campbell-McBride is a Member of The Society of Authors, The British Society for Environmental Medicine, and a Board Member of the Weston A. Price Foundation.