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Dr. Jill

Dr. Jill is Your Functional Medicine Expert!  She uses functional medicine help you find answers to the cause of your illness and the nutritional and biochemical imbalances that may be making you feel ill.

Our Clinic

Dr. Jill Carnahan, Medical Director and Founder of FLATIRON FUNCTIONAL MEDICINE is partnering with Dr. Robert Rountree of Boulder Wellcare, Inc. Her office is located in beautiful Boulder, Colorado. She is currently taking new patients by referral only.

Our Store

It's easier than ever to get what you need to stay healthy! Professional grade products from Thorne Research and Prothera delivered to your door. For instructions on how to order Thorne Research and Prothera/Klaire Labs products online simply click here and follow instructions.

Functional Medicine

Functional medicine addresses the underlying causes of disease, using a systems-oriented approach and engaging both patient and practitioner in a therapeutic partnership. It is an evolution in the practice of medicine that better addresses the healthcare needs of the 21st century.

Dr. Jill’s Blog

Macadamia Dark Chocolate Truffle Recipe

Macadamia Dark Chocolate Truffles ©

Macadamia Dark Chocolate Truffles This delicious Macadamia Dark Chocolate Truffles recipe was kindly shared by Pam Vagnieres. Check out her site Nutri-Physique for more tasty recipes! Macadamia nuts contain the least amount of (potentially inflammatory) omega-6 linoleic acid asany nut and are rich in minerals such as magnesium, manganese, copper, and iron. Macadamia nuts are […]

Pork and Turkey Thai Veggie Meatballs

Pork and Turkey Thai Veggie Meatballs

Pork and Turkey Thai Veggie Meatballs This yummy Pork and Turkey Thai Veggie Meatballs recipe was kindly shared by Judy Converse! See more of Judy’s recipes AND blogs on Nutrition Care for Children. Sounds like a mouthful of a combination, but boy does it work. Ground turkey, ground pork, shredded sweet potato and shredded carrot, lots of fresh […]

Eight Habits that Changed My Life

Eight Habits That Changed My Life

Have you been feeling the pressure to make New Year’s Resolutions that you know you won’t keep?  It’s the beginning of another year… a blank canvas on which to write out all your dreams and goals.  You may be reminiscing about all the wonderful things last year held for you or perhaps recalling some great loss […]

paleo carrot cake

Paleo Carrot Cake with Vanilla Icing

Paleo Carrot Cake with Vanilla Icing This delicious Paleo Carrot Cake with Vanilla Icing recipe was kindly shared by Brandi Mackenzie! Check out more of Brandi’s nutritious and gut-healing recipes on her website! I love carrot cake, but had never actually made a carrot cake that I could recall. So, last week when I was invited to a […]

low dose naltrexone (LDN)

Low Dose Naltrexone: The New Treatment You’ve Never Heard Of…

Low Dose Naltrexone (LDN):  The treatment you’ve never heard of… Why haven’t you heard about this amazing new breakthrough for conditions ranging from autoimmunity to cancer?  Perhaps because as of yet no company has stepped forward with the billions of dollars needed to do a large-scale study on low-dose naltrexone (LDN).  Unfortunately getting FDA-approval for use […]

What people are saying about Dr. Jill Carnahan


Dr. Jill recently treated a family member for a chronic problem that other doctors were unable to uncover. Her persistence and integrative approach was finally what led to a diagnosis after months of no answers. What was even more amazing was Dr. Jill did this while she was 1000 miles away in a new practice! She was able to offer phone consultations and email communications were always returned quickly. She is top notch!


I wanted you to know that as an Integrative Functional Medicine doctor you are 10 out of 10. In fact I tell people that you are the only one in the USA that could effectively treat my condition, and I really believe that :-)


I believe that people who go to functional medicine docs are typically desperate. We are the patients who are at the end of our proverbial rope, tired of taking drug after drug with no relief, and who traditional MDs don’t know what to do with. We just dream of a life without pain and to be able to function again. Thanks to Dr. Carnahan, I have no signs of the rheumatoid arthritis I was diagnosed with in 2012, and I’m regaining function that was stolen by the MS I was diagnosed with in 1991. I am recovering and regaining my life. Dr. Jill Carnahan is simply phenomenal.