Our Practice


We are a premiere anti-aging medical practice specializing in individualized age management regimens.


The Boulder Longevity Institute’s objective is to provide a comprehensive, individualized treatment program, using the latest in advanced research-based medicine and leading edge diagnostic testing, to slow or in some cases even reverse the degenerative processes that come with aging.

In doing so, it is our goal to help enhance your physical health, sense of well-being, and quality of life.

We do this by addressing all facets of your health and wellness including nutrition, fitness, and lifestyle. Our treatment protocols are centered around nutritional supplementation, combined with a special emphasis on hormone level analysis, the use of bio-identical hormone replacement therapy, and a rapidly expanding focus on epigenomics to provide a truly personalized treatment plan.



Physicians used to believe that our hormone levels fall because we age…

Now most believe the inverse is true.  We age because our hormone levels fall. By addressing this reality, called the “Neuroendocrine Theory of Aging”, and working to restore hormone levels to those of when you were younger, Boulder Longevity Institute can help you avoid age-related illnesses, improve your overall energy and health, and significantly improve the quality of your additional years.

Boulder Longevity Institute was founded by Dr. Elizabeth Yurth. MD.

Along with her over 20 years in practice in orthopedics as a Board Certified Physical Medicine and Rehabilitation physician and her Stanford Fellowship in Sports and Spine Medicine, Dr. Yurth is also Board Certified in Anti-Aging Medicine, has her advanced Fellowship Training in Anti-Aging Medicine, is a Member of the American Academy of Anti-Aging Medicine, and has completed over 400 hours of CME (Continuing Medical Education) training in the areas of Longevity, Nutrition, and Bio-identical Hormone Replacement Therapy.

Dr. Yurth created BLI to provide a venue where she could educate and share with her clients the powerful information she has learned about nutrition, hormones, and wellness, in a personalized one-on-one setting.  Led by Dr. Yurth’s expertise, training, and focus on patient education and communication, Boulder Longevity Institute provides a completely unique, positive, and valuable patient experience, totally unlike that which has become the norm in medicine today.

[Dr. Yurth] YOU are so amazing…I can’t tell you how much I appreciate your help. People like you are so rare. THANK YOU.


59 y.o. Female

Here at BLI we are different.

How do we know we’re different? Because that’s exactly what our clients keep telling us.  BLI has been in business since 2006 and was founded on the passion and commitment that Dr. Elizabeth Yurth had for finding a better way to treat her patients, using the kind of diagnostic testing and treatment protocols that so many of her patients just couldn’t find anywhere else.  That passion and commitment drives everything we do. We think that makes us different.

But what we think is really important is what our clients say makes us different:

We’re different because we listen, actually listen, to you when you tell us all the things that are negatively impacting your health and quality of life.  Our initial consultations are typically an hour or more.  During that time we want to hear about all of the concerns that are negatively impacting your quality of life and quality of aging.  That is a big part of designing your personalized treatment protocol.  It’s not just what the tests say, it is also what you say.  Think about it. When was the last time you were able to spend a solid hour-plus talking about your health and quality of life concerns at all, more or less with someone that actually has the expertise and training to do something about it?  No being rushed out the door, no remembering the really important questions on the way home from the appointment.  That makes us different.

We’re different because we don’t subscribe to the “magic wand” theory of medicine. We don’t give you some magic prescription pill and send you on your way saying that will take care of everything.  It would be great if it were true. But really, there are no silver bullets to aging well.  There are however, proven and well-researched approaches that will improve your physical well-being and quality of life. Aging well is a complex process, and we have the expertise and knowledge to guide you gracefully through it.
We’re different because we don’t use a cookie-cutter or one-size-fits all treatment approach that many of our anti-aging brethren use.  Every client is evaluated individually. Every treatment protocol is unique to you the client. And every tweak, every modification, to that custom treatment program is based on your unique clinical response to that treatment plan and your unique individual lab results. And now with our rapidly expanding focus on epigenetics, the study of “gene expression” or what turns genes (good or bad) on and off, our ability to create treatment plans as unique as your personal genome, is starting to become a reality.
And finally, we’re different because we strive to use technology to make your client experience better.  Yes, that’s right, a healthcare enterprise that is actually focused on customer service and using technology not to generate revenue for expensive procedures, but to actually make sure you the client have a great experience.  From our highly advanced cloud-based EHR (Electronic Health Record) system, to our extremely sophisticated diagnostic and genetic testing, along with a whole host of applications and features we have planned for the future, we use technology to help you be better informed, make better decisions about your treatment plans, and to truly enjoy your journey of aging well.
Basically, here at BLI we think we’re different because we actually take the time to practice medicine the way it should be practiced, one client at a time, providing the solutions that actually help our clients age well.  And while that doesn’t say a lot about healthcare today, it is quite simply, true.  So come experience “tomorrow’s medicine today” and see why Boulder Longevity Institute is one of the fastest growing boutique Anti-Aging clinics in the country.

    • Slow down and reverse the processes of aging
    • Provide comprehensive individual treatment programs for men and women
    • Use the latest diagnostic testing to give you the best results
    • Provide nutritional guidance so you can eat right and make the right choices in your diet
    • Use Bio Identical Hormone Replacement

Because of the significant limitations it would impose on our treatment options and the considerable overhead it would impose on our operation, BLI does not accept ANY type of insurance.  All charges must be paid directly by the client at the time of service. We accept Visa, MasterCard, checks, or cash. The majority of our clients simply provide credit card information that we keep safely and securely on file.  In many cases this credit card is tied directly to an HSA or other health savings account.

Of course, you are welcome to submit a claim to your insurance company and BLI will provide a detailed invoice to facilitate this,  but please be advised that your insurance company often will not cover BLI services and products.  Why?  That is really a question for your insurance company.
The good news however, is that many of the lab testing companies we deal with do work with insurance companies and depending on your insurance provider, this may be beneficial. Complete information on what your lab testing costs will be, given your particular insurance company, are discussed when you make your initial appointment.
Even though we don’t accept any insurance payments, we sometimes are asked by our clients to interact with their insurer for various reasons.  Please understand, we do not accept insurance in part, to avoid the significant overhead costs (in time and money) associated with these insurance company “interactions”. Given that we do not accept insurance payments, our policy on working with insurance companies is as follows: BLI will provide one-half hour of insurance related research and communication at no charge to the client.  After that, you will be billed at a rate $50/hr for additional insurance related research and communication requested by your insurer.  We will notify you, and get your approval, before we continue with any insurance related work that will cause you to be billed.