Hello Rick. To answer your question functional and integrative medicine are 2 distinct things. Functional medicine if you want to get technical, requires an in depth understanding of foundational clinical sciences to target the root cause of someone's ailments. That means understanding the physiologic, biochemical and cellular nature of a organism to optimize their health status and prevent/treat disease. Integrative medicine is more on the macroscopic side of treatment where you use different healing modalities and specialties to address a person's health issues. Integrative medicine would ideally use a general practitioner, gastroenterologist, nutritionist, acupuncturist and/or a meditative provider to treat a patient with back pain due to Crohn's or anxiety from dysbiosis. If you're still confused or want to learn more, there's 100s of 1000s of research papers out there or you can actually try to set up some time to talk with an integrative provider.
This is what I found on the differences. I like the GWCIM has doctors of all backgrounds (MD, ND, OD) and they work to treat the whole person not just alleviate a symptom. https://www.patronusmedical.com/blog/functional-medicine-vs-integrative-medicine
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