Functional Medicine & Root-cause care in St. Louis
Stop guessing. Start healing.
We uncover the why behind fatigue, gut issues, and hormone imbalances — connecting lab data and body feedback to restore health naturally.
"I was worried I'd never feel like myself again, but that changed after seeing Dr. Overley."
Alexis H
Who we Help
Conditions We Support
These are conditions we commonly help — but we treat the whole you, not your diagnosis.
Gut & Digestive Health
Common Conditions
- Bloating
- IBS
- Constipation
- Reflux
- SIBO
- SIFO
- Leaky gut
- Food intolerances
- Gut dysbiosis
- Parasites
Thyroid & Energy Balance
Common Conditions
- Hashimoto’s
- Hypothyroidism
- Weight changes
- Hair loss
- Fatigue
- Cold intolerance
- Brain fog
- Depression
Hormone Balance & Women's Health
Common Conditions
- PMS
- Irregular cycles
- PCOS
- Estrogen dominance
- Low progesterone
- Perimenopause
- Menopause
- Fertility
- Low libido
- Mood swings
Adrenal & Stress Resilience
Common Conditions
- Fatigue
- Anxiety
- Sleep disturbance
- Insomnia
- Burnout
- Cortisol imbalance
- Brain fog
- Low motivation
- Mood swings
Autoimmune & Inflammation
Common Conditions
- Joint pain
- Headaches
- Migraines
- Skin rashes
- Eczema
- Psoriasis
- Rheumatoid arthritis
- Chronic inflammation
- Mold toxity
- Chemical sensitivities
Metabolic & Weight Health
Common Conditions
- Blood sugar crashes
- Prediabetes
- Insulin resistance
- Metabolic syndrome
- Cravings
- Energy crashes
- Stubborn weight gain
If You've been told “EVERYTHING LOOKS NORMAL”
You're not alone... and you're not crazy
Many of our patients come to us with the same story:
- "Normal" labs
- Ongoing symptoms
- No clear answers
You don’t need another quick fix.
You need someone to finally connect the dots.
Why Root-Cause Care Matters
Symptoms Are Signals, Not Mistakes
Most doctors focus on managing symptoms… but rarely ask why they started.
We look deeper to find the root cause drivers that create imbalance, which lead to your symptoms.
“Now I can finally show up for myself — and for my family again. I just wish I had done this sooner.”
Jenn C
What To Expect
Clear Care That Evolves With You
Every stage of care is designed to help you feel understood, supported, and confident — while ensuring we don’t miss the details that matter most.
1. Discover
We start by listening and gathering the right data, so you feel understood and we don’t overlook hidden patterns.
2. Decode
We interpret your results through functional ranges and Systems Health Care insights to reveal why your body is under stress.
3. Design
We create a personalized plan that adapts as you heal — guided by consistent, doctor-led support every step of the way.
When we find the why, the healing follows.
3-Step CLinical Process
Our Proven Path to Real Healing
1. FIND
Identify your root causes through advanced testing and body feedback that reveals patterns others miss.
2. FIX
Address each root cause layer with targeted nutrition, fascia care, and system support.
3. STABILIZE
Lock in lasting results with rhythms that fit your life and keep you thriving longterm.
Why We're Different
Care That Restores Your Health
Most care stops at managing symptoms.
We focus on restoring function.
Most Healthcare
- Just manages symptoms
- Standard labs and no answers
- Overly restrictive diets
- Generic protocols + endless supplements
- Months of effort with little change
- Fragmented care
Our Health Care
- Finds root causes
- Labs that reveal what others miss
- Nutrition that restores function
- Personalized care + targeted supplements
- Step-by-step progress you can feel
- Integrated, whole-body care
Are you ready for answers?
Our Patient Results
Real Stories, Real Healing
Christopher NTrustindex verifies that the original source of the review is Google. At the time of me writing this I have had only two appointments and I’m seeing major improvement already. Would recommend Lois BTrustindex verifies that the original source of the review is Google. I am 90 and in good health. For a few reasons I want to see Dr. Overly. I've read many books on how to be healthy. Still, I learned so much from him. He does body work and trigger point therapy, etc. I hurt my spine when I was 13. Surprisingly, he suddenly did trigger point therapy on the exact spot. It surprised me. I have scoliosis and problems with balance. He helped me with my balance. A miracle. You are never to old to get better. I love Dr. Overly. Ashley BTrustindex verifies that the original source of the review is Google. Dr. Overley has been very helpful in my health journey. Other doctors would prescribe the same treatment each time no matter my symptoms, but Dr. Overley took the time at each visit to thoroughly review my symptoms and treat the root cause, looking at the wholistic view of my health and my goals. I highly recommend! Danielle GTrustindex verifies that the original source of the review is Google. Dr. Hunter Overley has been amazing to work with. If you want someone to care how you’re feeling this is the Doctor you need to see. He has made tremendous improvements in my health after expressing my issues to him. I could not recommend him more. He is very knowledgeable. Taylor PTrustindex verifies that the original source of the review is Google. I can’t say enough good things about Dr. Overley! For years, I dealt with frustrating digestive issues and low energy that no one seemed to be able to figure out. Traditional approaches only treated the symptoms but never got to the root of the problem. From my very first appointment, Dr. Overley really took the time to listen to my story and understand the bigger picture of my health. One thing that surprised me was discovering how much my IBS was tied to blood sugar imbalances—something no other doctor had pointed out. Even simple changes, like eating breakfast instead of skipping it, made a huge difference. He created a plan that felt totally doable, with targeted dietary advice, supplements, and small lifestyle tweaks that delivered real results. Within just a few weeks, my digestion improved, my energy levels soared, and my stress even felt more manageable for the first time in years. What really stands out about Dr. Overley is how much he truly cares. He’s incredibly compassionate, patient, and supportive—I always felt heard and never rushed. If you’re looking for a doctor who’s not just knowledgeable but also genuinely invested in helping you heal and thrive, I can’t recommend Dr. Overley enough! Mikayla TTrustindex verifies that the original source of the review is Google. Dr.Overley has been immensely helpful on my health journey. 2024 brought a lot of challenging health issues that I was not expecting and not sure how to work through, or where to even start. I didn’t feel heard or seen by other doctors, nor did I understand what was going on with my body. I was recommended to Dr.Overley by a close friend, and I couldn’t be happier with how things have gone so far. What I love particularly about his approach is how thorough he is, how well he listens, and how he is able to explain and educate. I feel like I am learning more and more about how to read and examine my own body and its needs. I also know that if I have questions after or before an appointment, I can count on him to answer them with helpful advice and guidance. Highly recommend him!! Tia CTrustindex verifies that the original source of the review is Google. Dr. Overley is the best! He is extremely knowledgeable, caring, and thorough. He has helped me and my family with so many things including skin rashes, migraines, digestive concerns, chronic pain, hormone imbalance, and more. Dr. Overley really takes all the time necessary with each appointment, listens to every detail, answers all questions, and explains things in ways that are easy to understand. He truly cares about his patients. I am so glad that we decided to start seeing Dr. Overley and am immensely grateful for how he has helped our family! Ronda TTrustindex verifies that the original source of the review is Google. He does a great job helping you reach your health goals. Highly recommend for anyone looking for a chiropractor or overall doctor who wants to see great results! He spends extra time with you if needed to ensure you are feeling well with each visit. Zachary WTrustindex verifies that the original source of the review is Google. It is clear when you begin working with Dr. Overley that he is passionate about what he does. He has the knowledge to help with so many conditions. He does a great job explaining why I was having my symptoms and how to fix the issue. If you're looking for a truly natural and holistic doctor look no further! Alexis HTrustindex verifies that the original source of the review is Google. Dr. Overley is amazing! I was feeling like my stomach issues would never be fixed after seeing multiple traditional doctors but that changed after coming to Dr. Overley. He really takes the time to figure out the root cause of what's going on. I am now feeling much better and can see the light at the end of the tunnel. Highly recommend!Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
Meet Your Doc
Healing begins with
understanding you.
Hi, I’m Dr. Overley!
For over a decade, I’ve helped St. Louis patients make sense of what their bodies are saying — so we can create a natural plan that actually works.
My role is to listen, guide, and give you practical tools that fit your life, so you can feel energized and confident in your health again.
Clarity Before you Begin
Frequently Asked Questions
What is functional medicine?
Functional medicine looks at why symptoms are happening, not just what they are. Instead of managing conditions with quick fixes or medication alone, we study how your systems work together and identify where things have fallen out of balance. The goal is to restore proper function so your body can heal naturally.
How is your approach different from other functional medicine clinics?
We blend functional lab analysis with Systems Health Care muscle testing and fascia assessment to understand how your body is actually functioning in real time. This allows us to build personalized, evolving plans — not one-size-fits-all protocols.
Do I need extensive testing before starting?
Not at all. We start with a focused Essentials Lab Panel that gives us a clear picture of your foundational systems. But in many cases, our Systems Health Care (SHC) muscle testing allows us to identify priorities and begin care without the need for additional labs. We may add more specialized testing if it’s truly needed but only when the results will meaningfully guide treatment. We believe in measuring what matters, not over-testing.
Do you take insurance?
We don’t bill insurance directly. This allows us to spend more time addressing root causes instead of following insurance restrictions. You’ll receive a superbill you can submit to your insurance for possible out-of-network reimbursement.
Can I use my HSA or FSA account?
Yes. Most patients use their Health Savings or Flexible Spending Accounts to cover visits, lab work, and supplements.
Do you see patients virtually or in person?
We see patients locally in our St. Louis office and offer virtual appointments on a case-by-case basis. If you’re interested in virtual care, please contact Dr. Overley to discuss your situation and determine what options may be right for you.
Who is this approach best suited for?
Our care is ideal for people who want to understand and truly heal their health, not just cover symptoms with band-aid fixes.
We help those dealing with chronic fatigue, hormonal changes, digestive issues, thyroid dysfunction, or recurring inflammation find clarity and lasting results through a clear, step-by-step process.
Still have questions?
Schedule a free 20-minute consultation to learn more about how our process works and whether it’s the right fit for you.