• Clinical Nutrition: A Functional Approach by The Institute for Functional Medicine
• The Textbook of Functional Medicine by The Institute for Functional Medicine
• The Textboook of Integrative Medicine 3rd edition by David Rakel MD
• Functional Inflammology – Alex Vasquez DO, DC, ND. See various books by Alex Vasquez on Amazon.com.
• Neuroimmunity and the Brain-Gut Connection (Functional Neurology) by Aristo Vojdani MD