Functional medicine vs integrative medicine

Functional medicine is a method: it asks why a system is malfunctioning and works backward to the driver. Integrative medicine is a philosophy of scope: it combines conventional treatment with evidence-informed complementary therapies. One describes how the thinking works, the other describes what is allowed in the toolkit.

Because they answer different questions, they are not alternatives and they overlap heavily in practice. A functional medicine practitioner usually draws on integrative tools, and an integrative physician usually thinks about root causes. The label on the door tells you less than the practitioner's training, the length of their appointments, and whether anyone is accountable for a plan between visits.

The underlying science — nutrition, metabolic health, the microbiome, endocrinology — is well established. What varies is how individual practitioners apply it, and some functional testing has weaker validation than the conventional panels it supplements.

The honest position is that the framework is sound and the execution is uneven, because the field is not uniformly regulated. Practical safeguards: ask which of your results would change the plan before agreeing to a panel, ask what the expected timeline is, and be cautious with anyone who recommends the same protocol regardless of what your history shows.

Sometimes. Neither term is legally protected. They cover licensed physicians, chiropractic physicians, nurse practitioners, naturopathic doctors and certificate-trained coaches alike, so the licence matters more than the label.

The three questions worth asking any practice: what licence does the clinician hold, who interprets the labs, and who is accountable for the plan between appointments. A clear answer to all three tells you more than any certification listed on a website.