
Est. Boulder · Specific. Scientific.
Find your foundation.
Chiropractic care that fixes the root cause — not the symptom. Boulder's foundation for spinal correction since 1984.
40+
Years in Boulder
3
Generations
280+
Research Articles
32
Conditions Treated
§ 02 · The Why
For when —
You're tired of managing what should be healed.
No. 01
Sidelined by joints that ache — and tired of pretending it's fine.
No. 02
Drained of the energy you used to have. Caffeine isn't fixing it.
No. 03
Done with appointments that never get to the root cause.
You're not broken — your nervous system is asking for help. We treat the source, not the symptom. The result is a foundation that lasts.
§ 03 · The Numbers
Three generations. One mission.
A family of chiropractors building the kind of practice you only get by doing it right — patient by patient, decade by decade.
40+
Years in Boulder
3
Generations of Chiropractors
280+
Peer-Reviewed Studies
32
Conditions Treated
CBP® Certified Doctors
Palmer + Life West trained
Webster Technique for prenatal
§ 04 · The Method
The Health From Within Plan.
A three-step protocol built around evidence-based Chiropractic BioPhysics — backed by 280+ peer-reviewed studies and practiced by only 5% of chiropractors worldwide.
01
Get Real Answers
Set up an appointment to get real answers and real solutions — to help you get unstuck so you can start living your life again.
02
Unleash Your Healing Energy
Overcome your struggles by discovering what's actually going on, and apply the solution to unleash the energy from within.
03
Create A Happy And Healthy Lifestyle
Create a lifestyle that allows your body to heal so you are empowered to be free from health problems and connect with your joy.
§ 05 · The Doctors
A mother & son legacy.
Dr. Natalie Lyle has practiced chiropractic for 25+ years. Her son, Dr. Alexander Duff, is a third-generation chiropractor adjusted on his second day of life. They practice together in Boulder.
§ 06 · What We Treat
Far more than back pain.
Spinal alignment regulates the nervous system. Optimize the source, and downstream issues — sleep, digestion, immunity, mood — start to resolve too.
§ 07 · Who We Serve
Every body. Every stage.

§ 08 · The Foundation Visit
$79
A complete picture of your spinal health — before you ever commit to care.
- 1-on-1 Consultation
- Neurological Exam
- Movement Analysis
- Postural Assessment
- Digital X-rays
- Doctor's Report of Findings
§ 09 · In Their Words
4.1 ★ across 292 Google reviews
The kind of office people stay at for years.
Quote No. 01
“Very good results with posture, spinal alignment and recently with back pain following surgery. I prefer gentle chiropractic — not a lot of cracking, but subtle adjustments, traction and home exercises. Dr. Duff really listens!”
Quote No. 02
“I had a left hip replacement and was reluctant to go to a chiropractor. Thanks to Dr. Duff, I don't think I will have the right hip done. Thank you Dr. Duff.”
Quote No. 03
“The staff is incredibly friendly. I love their objective and analytical approach to chiropractic adjustments — they start with X-rays and track progress towards established goals. This is unlike any other chiropractor I have been to.”
§ 10 · Begin
Your foundation starts here.
One conversation. One thorough evaluation. A clear plan — or the honest answer that we're not the right fit. Either way, you'll know more than you did this morning.
3083 Walnut St · Boulder, CO 80301









