Integrative, Functional & Lifestyle Medicine
Functional medicine practitioners
A practice approach focused on health history and proposed contributors to illness; credentials and methods vary.
Overview
Functional medicine is not a recognized ABMS medical board specialty. Some practitioners are licensed clinicians; others are not. Evaluate the actual license and each proposed test or treatment rather than relying on the label.
What to expect
- Review a detailed history and goals
- Review prior results, medicines, and supplements
- Ask which tests are validated and would change care
Why people explore it
- People often explore it for a longer discussion of health history.
- People often explore it for nutrition and lifestyle guidance.
- People often explore it for a second perspective alongside regular medical care.
These are common reasons people look into it — not a sign that it's right for you.
What the evidence says
Early or limited evidence
Research is small, early or inconsistent so far.
Better supported
- Standard medical care and established nutrition advice retain their own evidence.
Promising, but limited or uncertain
- Evidence for functional medicine as a complete care model is limited.
Not supported by evidence
- Broad food-IgG panels, routine toxin panels, and costly supplement protocols are not validated ways to diagnose or treat a wide range of illness.
Possible risks and precautions
- Unvalidated testing can lead to false alarms, restrictive diets, and unnecessary expense.
- Supplements can cause toxicity or drug interactions.
- Do not stop prescribed care or undertake chelation or other invasive protocols without an established medical indication.
If you have a health condition, are pregnant, or take medicines, ask your healthcare provider first.
Who provides it
- Check the practitioner’s actual MD, DO, NP, PA, dietitian, or other license and authorized scope.
- Functional medicine certificates are not a substitute for medical licensure or recognized specialty board certification; requirements vary by state.
Questions to ask before booking
- What license or credential do you hold, and what is your scope of practice?
- What evidence supports this approach for my goals?
- What risks or modifications should I discuss with my healthcare team?
- How will we track progress and decide whether to continue?
- What will I pay, and do I need a referral?
Costs and coverage
- Fees depend on the provider, setting, and services offered; ask for a written estimate.
- Coverage and referral rules vary; check with your plan before booking.
Coverage changes often and differs by plan. Always confirm with your insurer and the provider.
Find this service
Search our free Find Help directory under “Doctors & healthcare”. Listings are information only — appearing there is not an endorsement.
Watch & learn
Functional Medicine vs. Conventional and Integrative Care — a short Designed to Heal 360 video about this is in production. It isn't available to watch yet.
Related educational videos from trusted creators:
Think it through
What would I like to know about functional medicine practitioners before deciding whether it's right for me?
Your journal is private to you.
Sources
- ABMS — Specialty and Subspecialty Certificates
- NCCIH — Are You Considering a Complementary Health Approach?
- NCCIH — Using Dietary Supplements Wisely
Content reviewed . Written for general education and not yet reviewed by a licensed clinician.
Educational only — not medical advice, diagnosis or treatment. Supportive wellness practices do not replace necessary medical or mental-health care. Options are not equally effective, and not every option is right for every person. Please talk with a qualified healthcare professional about your own situation. In an emergency, call your local emergency number; in the US, call or text 988 for crisis support. Emergency help