Dr. Jill welcomes you!


Dr. Jill

Dr. Jill Carnahan emphasizes an integrative holistic approach to wellness using both conventional medicine and evidence based complementary therapies. This medicine that takes account of the whole person (body, mind, and spirit), including all aspects of lifestyle.

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 scheduling Integrative Functional Medicine consultations for new patients.

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


Diagnosis and Treatment of Leaky Gut: Part II

 Did you miss my first Leaky Gut Article?!  Read more here! So now you may be wondering if you have leaky gut… Food allergies, toxins, sugar, antibiotics, parasites and stress can wreak havoc with your gastrointestinal system, upsetting the balance in your intestine as well as allowing harmful substances to enter the system. Gas, bloating, diarrhea, constipation or abdominal […]


11 Tips For Breast Cancer Prevention

It’s Breast Cancer Awareness month, so here are a few simple tips for prevention! Exercise: Women who do aerobic exercise 3-5 times per week have a 37-60% less risk of breast cancer. Exercise lowers the amount of estrogen and dangerous estrogen metabolites. Stress Reduction: Chronic stress is a huge risk factor not only for heart […]


Dr. Jill’s Top Ten Healthy Travel Tips

Dr. Jill’s Top Ten Healthy Travel Tips Do you struggle with staying healthy when you travel? From lack of healthy food options in the airport to being seated right next to the one person who is coughing in your face, there are many perils to your health. If you are like me, you want to […]

frozen fudge pops

Frozen Fudge Pops

Check out these delicious Frozen Fudge Pops! This quick and easy recipe was shared by Brandi Mackenzie! You can try more of her scrumptious recipes….all available on her website! Did you love this recipe? Don’t miss a single one!! Join today and get your FREE copy of Dr. Jill’s Paleolicious Snack Ideas!

No-Bake Vitality Treats

Gabriela’s No-Bake Vitality Treats

Check out these yummy little vitality treats shared by Lisa Lanzano of Essential Nutrition! She says, “My girlfriend, Gabriela, introduced me to these treats, so I named them after her. They are so yummy and versatile! I find it easiest to work with the dough by putting a little oil on my hands first before rolling it […]

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 to say THANK YOU!!!! When I woke up this morning I hit the lowest I have weighed since I was in High School and my waist size is actually smaller. Not to mention, I feel like a totally different person. My goals and outlook on life have totally changed because of you and your expert analysis, guidance and most of all SUPPORT.

I will never forget sitting in your office and hearing you say “When we take care of the this bacteria over growth you will start loosing weight” and thinking it couldn’t be that easy… but it was. With proper diet, the right supplements and medicine it’s made a greater change in my life then you will every know. I tell everyone I see about… how spectacular you have been. As I stated above you have changed my life and all in less than 6 months!!!!


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 :-)