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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


6 Simple Steps to Treat Your Depression without Drugs

Depression is no laughing matter.  It is a very serious ailment affecting nearly 15 million Americans  often treated with potent prescription medications.  Furthermore, side effects of antidepressants run the gamut from decreased libido, to flat emotions, restlessness, sleep disturbances, even thoughts of suicide.   In cases of mild to moderate depression there are natural solutions that may help to restore […]

Donna con dolore alla pancia

Mind Altering Microbes: How your gut microbiome may influence your mood

“I’ve got a gut feeling about this” While we have certainly heard that appetite and digestion are controlled by the enteric nervous system  (also known as “the master control panel in your gut”), who would’ve thought that the gut might also control your emotions and mood?  It’s no wonder the old sayings, like “I’ve got a gut feeling […]

Stewed Apples with Cinnamon

Stewed Apples with Cinnamon

Stewed Healing Apples and Immune Cofactors Foods confer information to humans through the direct delivery of micro and macronutrients via different signalling mechanisms. The immune system in the gastrointestinal system is a highly active component of human health and its bacterial load, in conjunction with the foods selected confer a wide range of opportunities for […]

Petri dishes with mold on white surface

Is Toxic Mold Exposure the Cause of Your Symptoms?

Are you one of the many people unknowingly living or working in water damaged building?  Did you know it may be dramatically affecting your health?  It’s estimated that indoor air pollutants, including mold and mycotoxins may be contributing to more than 50% of our patient’s illnesses.  Typically we think of smog, smoke, and outdoor pollution as detrimental to our […]

vegetables on wooden table

The Low Mold Diet

THE LOW MOLD DIET Use this guide to shift your diet away from high sugar and starchy foods to more fresh, whole foods.  If you suspect you’ve been exposed to mold or mycotoxins, read my post on mold exposure here. Foods that must be avoided Avoid sugar  and sugar containing foods: Table sugar and all other simple, […]

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.

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