Functional Medicine & Nutrition Specialist in Boulder

Dr. Karen Hufnagl, DC, MS has been in the functional and nutritional medicine field for more than 16 years. She specializes in getting to the root cause of issues with hormones, gut health, nutrition and weight. There’s no guessing. Dr. Karen uses the most cutting-edge, science-based testing to diagnose and personalize a treatment plan to put your whole body back in balance.

About Dr. Karen

Dr. Karen’s approach is rooted in her own journey through thyroid cancer, multiple hormone imbalances, poor gut health, and years of struggling with her weight. She obtained her Doctor of Chiropractic degree from Palmer College of Chiropractic West in 2000 and her Masters in Clinical Nutrition from the University of Bridgeport in 2003.

Bridgeport is widely recognized as one of the best and oldest nutrition programs in the country, and one of the only programs with a specific focus on Functional Medicine. Her background also includes pre-med and kinesiology. She continues with ongoing post-doctorate training and certifications, including functional endocrinology, functional medicine, women’s health, environmental medicine, and functional blood chemistry.

What Does She Treat?

  • Gut/Digestive Issues
  • Stubborn Weight
  • Hormone Imbalances
    • Adrenals (HPA Axis Dysfunction)
    • PMS/PCOS/Women’s Hormone Imbalances
    • Low Testosterone Symptoms
    • Thyroid
  • Fatigue
  • Poor Recovery
  • Cravings
  • Insomnia
  • Blood Sugar/Insulin Issues
  • Low Libido
  • Poor Athletic Performance

How Does it Work?

Initial Consult — 90 minutes $345 Review of full health history and symptom assessment, 3-day food log, and ordering of any necessary diagnostic testing for evaluation before a personalized treatment plan is implemented. Testing kits will be provided as well as instructions for collecting stool, blood, urine, breath, etc. Testing fees are additional and most tests range from $100-$350 (and some are covered by insurance). *Requires 72 hour notice before booking so we have time to collect and review patient history. Please fill out the following intake form at least 72 hours prior to your appointment: Complete Intake Form Here*

Dr. Karen is no longer accepting new patients at this time. Please contact for more information. 
If you’re a current patient of Dr. Karen, you book follow-up sessions through the links below.

Follow-Up Lab Review Consult — 75 minutes $285 Review of all test results to design comprehensive treatment plan including targeted nutritional therapy, personalized supplement plan, and lifestyle therapies as appropriate for each individual.


Follow-Up Appointments — 30-60 minutes $115-220 These are useful in tracking progress and keeping you on track to achieving your goals as efficiently as possible. Can also include reassessment with follow-up testing, support for troubleshooting challenges, and of course celebration of successes! Most patients require 2-3 follow-up appointments.


*Please note that payment is made at time of service and not processed through CrossFit Sanitas or the MindBody scheduling system*

What Her Patients Have To Say

“Three years ago, my training for an upcoming half marathon was a struggle. My leg muscles were fatigued within the first two miles of training runs and my overall energy levels were significantly diminished. Within weeks of working with Dr. Karen, my energy levels returned to normal and my training runs had drastically improved.” — Evan P.

“These days, I think I almost take my health for granted. I feel refreshed when I wake up in the morning and I don’t have the 3PM slump that I used to think was normal. My IBS is gone and it’s actually easier for me to stay in shape because I have more energy for exercise.” — Lisa C.