Finally, a Doctor Who Treats the Root Cause — Not Just the Symptoms

If you’re exhausted, frustrated, or feeling trapped by thyroid issues, IBS, chronic fatigue, or unexplained symptoms — you’re not alone. Most patients who find us have already tried the conventional route. They’ve seen multiple doctors, been told their labs are “normal,” and still don’t feel right.

Local care in Carmel, IN | Telehealth nationwide

Functional Medicine

Local & telehealth nationwide

In-Person Care

Carmel, IN clinic for hands-on treatment

Free Consultation

Schedule your 15-minute intro call

THE MEDICAL MERRY-GO-ROUND

When Your Symptoms Don't Fit Into a Simple Diagnosis

Patients come to us at different stages of their health journey. Some already have a diagnosis and are seeking more effective solutions, while others are still searching for answers, unsure why their body isn’t functioning as it should. No matter where you are, we meet you where you are and help make sense of what’s happening in your body.

Some patients are dealing with internal symptoms — fatigue, brain fog, digestive issues, or hormonal imbalances — that haven’t been clearly explained. Others are struggling with physical pain, nerve issues, or joint limitations that affect daily life. Our goal is to uncover the root cause of your symptoms and create a personalized plan that restores your health, energy, and vitality so you can feel like yourself again.

Conditions We Work With

Patients come to us at different stages of their health journey. No matter where you are, we meet you there.

Functional Medicine (Local + Telehealth)

Hashimoto’s & Low Thyroid

Feeling tired, forgetful, or like your body has betrayed you? Thyroid imbalances affect every part of life. We uncover the root cause and create a plan that restores energy, stabilizes hormones, and reduces inflammation, so you feel like yourself again.

IBS & Digestive Disorders

Bloating, pain, or unpredictable digestion can make daily life feel impossible. We dig deeper to find the triggers in your gut and immune system, using personalized nutrition, lifestyle guidance, and functional medicine to heal your digestion and bring back confidence in your body.

Musculoskeletal & Neurological-Focused Services

Neuropathy & Nerve Dysfunction

“Numbness, tingling, or burning sensations can be frightening and limiting. We combine root-cause functional medicine with advanced therapies to relieve pain, restore function, and give you hope for a more comfortable future.”

Knee Pain & Joint Issues

“Chronic knee or joint pain can prevent you from doing the things you love — walking, playing with your kids or grandkids, or even getting out of bed comfortably. We use non-surgical, evidence-based therapies to reduce pain and restore mobility, so life feels joyful again.”

Chiropractic Care for Chronic Pain and Mobility Challenges

“Pain shouldn’t define your day. We support your musculoskeletal and nervous system health with advanced therapies that complement functional medicine, helping you move freely, confidently, and without fear.”

MEET DR. GAFKEN

Hi, I’m Dr. Gafken

The Doctor that Delivers Thoughtful, Comprehensive Care Designed Around You

DR. LUCAS GAFKEN, DC, DACNB
Neurometabolic Solutions

“For too many people, doctors treat symptoms instead of the person behind them. If you’re tired of dealing with low energy, gut issues, thyroid imbalances, neuropathy, or chronic joint pain—and feeling like no one truly gets it—it’s time for a different experience. My mission is to listen, investigate, and guide you toward real healing.

“Either through functional medicine or utilizing advanced therapies for nerve and joint health, I help patients restore their energy, reduce pain, balance hormones, and regain confidence in their bodies. Every plan is personalized, evidence-based, and rooted in compassion.”

Credentials & Expertise: Functional Medicine Doctor, Chiropractic Neurologist, Functional Medicine lecturing all across the US, Certified in Shockwave, Class IV Laser, Spinal Decompression
Philosophy: “Healing starts with understanding — and treating — the root cause”
Telehealth for functional medicine: Distance is no longer an obstacle. No matter where you live, if you have a phone and internet connection we can work together.

A Different Way of Looking at Chronic Health Problems

Most healthcare treats symptoms, not the root cause. We do things differently. Using functional medicine combined with targeted therapies, we uncover why your body isn’t functioning — whether it’s thyroid, gut, hormonal, or metabolic issues — and create a personalized plan to restore energy, clarity, movement, and vitality.

Most of the patients Dr. Gafken works with are not looking for quick fixes. They’re looking for clarity. So if you’ve been told everything is “normal” but still don’t feel right, you’re not alone. Fatigue, brain fog, digestive issues, joint pain, and thyroid imbalances often signal deeper patterns that basic testing misses. We use advanced, precise, and comprehensive testing to understand your unique biology, then integrate internal health optimization to deliver real, lasting results.

You don’t have to keep guessing or living with unresolved symptoms. Schedule your consultation and take the first step toward feeling like yourself again.

Is This the Right Fit?

This approach works best for patients who:

Have already tried conventional care and want a deeper investigation
Are willing to engage in testing and make real lifestyle changes
Are dealing with complex, multi-system symptoms — not a single acute issue
Want to understand why their body is doing what it's doing, not just what pill to take

This may not be the right fit if you:

We’re direct about this because the right match matters — for you and for us.

Real Patients, Real Hope

    
 
 
       Posted on Google  
   
   erica worrell 
 
 
 
 Trustindex 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 Google  
   
   Erin Flynn 
 
 
 
 Trustindex 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 Google  
   
   BC 
 
 
 
 Trustindex 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 Google  
   
   Donna Snyder 
 
 
 
 Trustindex 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 Google  
   
   Bryn Bailey 
 
 
 
 Trustindex 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 Google  
   
   sherri b 
 
 
 
 Trustindex 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 Google  
   
   Keely Maricle 
 
 
 
 Trustindex 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!

Two Ways to Work With Dr. Gafken

Functional Medicine (Local & Telehealth)

For internal symptoms like fatigue, digestive issues, thyroid or metabolic imbalances. We use advanced testing to uncover root causes and guide a personalized plan.

In-Person Care (Carmel, IN Only)

For physical concerns like neuropathy, knee pain, sciatica, or spinal issues. Care includes hands-on treatment, targeted therapies, and structured plans to reduce pain, improve movement, and restore function.

How The Functional Medicine Process Works

Consultation

We start with your symptoms, history, and prior tests to identify patterns.

Advanced Testing

Lab work looks deeper at thyroid, gut, metabolism, and inflammation to reveal the root causes.

Lab Review & Strategy

A one-hour session to explain results and connect the dots between symptoms and underlying physiology.

Personalized Plan

Tailored strategies may include nutrition, supplements, lifestyle adjustments, digestive support, and metabolic or inflammatory care.

Ongoing Follow-Up

Progress is tracked and protocols refined to ensure lasting improvement.