Meet Dr. Lucas Gafken
- Board-certified Chiropractic Neurologist
- Functional Medicine Specialist
- 15+ Years Clinical Experince
- National Functional Medicine Educator since 2016
15+ Years Experience
Complex chronic conditions
Nationwide Telehealth
Functional medicine remotely
Advanced Therapies
Shockwave, Laser, Decompression
About Dr. Gafken
Dr. Lucas Gafken is a board-certified chiropractic neurologist, diplomate of the American Chiropractic Neurology Board, and functional medicine practitioner with more than 15 years of experience helping patients who feel stuck, overlooked, or without answers finally make sense of their health.
As a second-generation chiropractor, Dr. Gafken was introduced early to a different way of thinking about healthcare—one that focuses on understanding the whole person, not just treating isolated symptoms. Growing up in his father’s clinic, he saw firsthand the impact of truly listening to patients and looking deeper when others had stopped searching.
That philosophy continues to shape his work today.
After earning his Doctor of Chiropractic degree from Life University in 2009, Dr. Gafken pursued extensive advanced training in functional medicine, endocrinology, metabolic health, and neurological rehabilitation. His clinical background includes in-depth work with hormone balance, thyroid disorders such as Hashimoto’s disease, blood chemistry analysis, brain health, and functional diagnostic testing.
In his practice, Dr. Gafken focuses on patients dealing with complex, chronic conditions—especially those who haven’t found success with traditional approaches. Rather than viewing the body as separate systems, he works to uncover how the brain, immune system, thyroid, digestion, and metabolism are all connected—and how disruptions in one area can affect the whole.
Patients often come to Dr. Gafken after years of frustration. His goal is not just to provide answers, but to help them feel heard, understood, and supported throughout the process—while creating a clear, individualized path forward.
In addition to his clinical work, Dr. Gafken has lectured extensively to other healthcare professionals on functional neurology, functional medicine, and neuroimmunology.
Courses Dr. Gafken has instructed include:
Mastering The Thyroid
Mastering Functional Blood Chemistry
Functional Endocrinology
Mastering Brain Chemistry
Inflammatory and Autoimmune Signaling Systems
Neuroendocrine Immunology of SIBO
Gluten-Leaky Gut-Autoimmune Connection
Food Allergies and Sensitivities in the New Millennium
Brain-Gut Axis
Neuroendocrine Immunology of Environmental Toxicity
And more…..
What Makes
Dr. Gafken Different
Most patients who come to our clinic have done everything they were told to do—yet still don’t feel like themselves. They’ve seen multiple providers, completed standard testing, and have often been told everything looks “normal.” But they know something isn’t right.
At our clinic, we don’t dismiss that—we build our entire approach around it.
Dr. Gafken combines advanced functional medicine with the principles of functional neurology to take a deeper, systems-based view of your health. Rather than chasing isolated symptoms, we evaluate how the thyroid, gut, metabolism, immune system, and nervous system are all working together. Because when one system is off, it affects everything.
Through advanced testing, detailed analysis, and clinical experience, we identify the underlying patterns driving your symptoms—whether it’s fatigue, brain fog, digestive issues, neuropathy, inflammation, chronic pain, or unresolved thyroid conditions.
From there, we create a structured, highly personalized plan tailored specifically to your body.
Intentional. Targeted. Comprehensive.
The goal isn’t simply to manage symptoms—it’s to understand them, address their root cause, and restore the way your body is meant to function.
What Patients Say
Posted on erica worrellTrustindex verifies that the original source of the review is Google. I can't say enough good things about my experience with Dr. Gafken. After struggling for years with persistent gut issues and ongoing thyroid problems, I started to feel like I would never get real answers. Dr. Gafken took the time to listen-asking detailed questions, and helped me connect the dots that had been overlooked for years. He is proactive and solution based. Rather than managing my symptoms, Dr. Gafken works to identify and address the root causes of my issues, keeping me involved in the decision making process. He is incredibly available and supportive between appointments-questions are answered promptly, and I feel that my progress matters. I highly recommend working with Dr. Gafken, it has truly changed my life.Posted on Erin FlynnTrustindex verifies that the original source of the review is Google. I cannot say enough good things about Dr. Gafken and his staff. He takes the time to carefully listen to my symptoms, explain my lab results in a way that make sense, and walk me through all of my treatment options without ever making me feel rushed. I started seeing him for thyroid issues, which can be overwhelming. But his thorough approach has made the entire process so much easier. He is very knowledgeable and incredibly attentive to detail. I especially appreciate how proactive he is about monitoring levels and adjusting treatment to make sure I'm feeling my best—not just "within range." If you're looking for a doctor who genuinely cares and is committed to helping you feel better, I highly recommend Dr. Gafken!Posted on BCTrustindex verifies that the original source of the review is Google. Dr. Gafken is the best doctor I have encountered. He is THE first doctor who took my symptoms seriously and offered me genuine help. From what I’ve noticed, he is excellent with helping people with complex cases, chronic cases, mysterious cases, or previously mis-managed cases. Here’s my personal experience: He listened to my concerns, and then had a plan laid out for me that was effective. He devoted time to explaining every detail I could want to know. He is dedicated to patient learning. He treats me like an equal in intelligence and he listens to what I have to say about my own body. He cares about the root cause of illness and doesn’t reach for a band-aid “solution”. He takes my case as an opportunity to learn even more, and be the best doctor he can be. He really puts himself in patient’s shoes, and tries to bridge any gaps that may be occurring. He is also a wizard at reading lab results. He gave me back my Mind, and improved my quality of life dramatically. His techniques have brought me the most improvement out of any other doctors I’ve visited. He continues to help me and is dedicated to my case. What more could I ask for? I just want other people who are suffering to find the same relief as I did here.Posted on Donna SnyderTrustindex verifies that the original source of the review is Google. I started working with Dr. Gafken in July 2014. I had chronic sinusitis, hives and brain fog. I did all the bloodwork, food allergy testing and Functional neurological exercises for my brain fog. He changed my life for the better. We determined a path to take and I continue to follow up with him on a regular basis. My allergies, hives, and brain fog have cleared up. Thank you for my life back.Posted on Bryn BaileyTrustindex verifies that the original source of the review is Google. Awesome place to go and get answers! Dr. Gafken helps to get to the root of your medical issues and help your body work the way it is supposed to. Highly recommend.Posted on sherri bTrustindex verifies that the original source of the review is Google. I went to see Dr Gafken for pain in my legs due to neuropathy resulting from radioactive iodine treatment. After some testing, he identified that my balance was suffering, something I was not aware of. Also did some blood work and found a Vit B deficiency. Something my family Dr did not see. He put together a therapy program that helped with my balance and reduced my pain to almost nothing. My energy level also increased once I started taking Vit B supplements.Posted on Keely MaricleTrustindex verifies that the original source of the review is Google. Dr Gafken is an amazing dr! He goes above and beyond to help me with my hashimotos and everything else! I highly recommend him to anyone and everyone loves!
How Our Process Works
Working with Dr. Gafken follows a clear, step-by-step process designed to uncover the root causes behind your symptoms and create a precise, personalized plan for your health.
Comprehensive Consultation
Your first appointment is focused on understanding the complete picture of your health — not just your symptoms.
During this visit, we take the time to explore:
- Your current symptoms and primary concerns
- Previous diagnoses and treatments
- Past laboratory testing and results
- Lifestyle factors that may be influencing your health
This conversation is designed to uncover patterns and connections that are often missed in traditional, symptom-based care.
Advanced Laboratory Testing
To truly understand what’s happening beneath the surface, deeper testing is often required.
Based on your history and symptoms, Dr. Gafken may recommend:
- Comprehensive blood chemistry testing
- Stool testing to assess gut health and microbiome balance
- Food sensitivity testing
- Saliva hormone assessment
These tests allow us to identify underlying imbalances that are frequently overlooked with basic lab work.
Where Testing Takes Place
For bloodwork, patients are referred to trusted, nationwide lab networks such as Quest Diagnostics and LabCorp, allowing for convenient local testing.
Specialized functional medicine testing (such as stool or microbiome analysis) is completed through at-home kits shipped directly to you.
This allows both local and out-of-state patients to complete testing without needing to travel to the clinic.
In-Depth Lab Review & Clinical Analysis
Once your results are available, we schedule a dedicated lab review appointment.
During this visit, Dr. Gafken will walk you through:
- What your results reveal
- How different systems in your body are interacting
- The underlying patterns contributing to your symptoms
This is where clarity begins, turning complex data into a clear understanding of what’s actually going on in your body.
Personalized Care Plan
Based on your results, we design a structured, individualized plan tailored specifically to you.
Your plan may include:
- Targeted nutrition strategies
- Precision supplementation
- Digestive and gut restoration protocols
- Support for inflammation and metabolic function
- Lifestyle adjustments to support long-term results
Every recommendation is intentional and based on your unique physiology — not a one-size-fits-all protocol.
Ongoing Support & Progress Tracking
Chronic conditions develop over time, and resolving them requires a thoughtful, adaptive approach.
Follow-up visits allow us to:
- Monitor your progress
- Adjust your plan as needed
- Continue refining your strategy for optimal results
Many patients begin noticing meaningful improvements within a few months, though timelines vary depending on individual complexity.
Your first appointment is focused on understanding the complete picture of your health — not just your symptoms.
During this visit, we take the time to explore:
- Your current symptoms and primary concerns
- Previous diagnoses and treatments
- Past laboratory testing and results
- Lifestyle factors that may be influencing your health
This conversation is designed to uncover patterns and connections that are often missed in traditional, symptom-based care.
To truly understand what's happening beneath the surface, deeper testing is often required.
Based on your history and symptoms, Dr. Gafken may recommend:
- Comprehensive blood chemistry testing
- Stool testing to assess gut health and microbiome balance
- Food sensitivity testing
- Saliva hormone assessment
These tests allow us to identify underlying imbalances that are frequently overlooked with basic lab work.
Where Testing Takes Place
For bloodwork, patients are referred to trusted, nationwide lab networks such as Quest Diagnostics and LabCorp, allowing for convenient local testing.
Specialized functional medicine testing (such as stool or microbiome analysis) is completed through at-home kits shipped directly to you.
This allows both local and out-of-state patients to complete testing without needing to travel to the clinic.
Once your results are available, we schedule a dedicated lab review appointment.
During this visit, Dr. Gafken will walk you through:
- What your results reveal
- How different systems in your body are interacting
- The underlying patterns contributing to your symptoms
This is where clarity begins, turning complex data into a clear understanding of what's actually going on in your body.
Based on your results, we design a structured, individualized plan tailored specifically to you.
Your plan may include:
- Targeted nutrition strategies
- Precision supplementation
- Digestive and gut restoration protocols
- Support for inflammation and metabolic function
- Lifestyle adjustments to support long-term results
Every recommendation is intentional and based on your unique physiology — not a one-size-fits-all protocol.
Chronic conditions develop over time, and resolving them requires a thoughtful, adaptive approach.
Follow-up visits allow us to:
- Monitor your progress
- Adjust your plan as needed
- Continue refining your strategy for optimal results
Many patients begin noticing meaningful improvements within a few months, though timelines vary depending on individual complexity.
Local Care & Nationwide Telehealth
✅ While our clinic is based in the Carmel, IN, we work with patients across the country through telehealth.
✅ Our process is centered around advanced testing and detailed consultations—you can complete everything from your local area using nearby labs and at-home test kits.
✅ This allows you to access a high-level, investigative approach to your health—no matter where you live.
If you’ve been told everything looks normal but still don’t feel right—this is where to start.