About Dr. Andrew Neville

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Dr. Andrew Neville

Adrenal Fatigue Specialist
Director, Clymer Healing Center

For more than 24 years, Dr. Andrew Neville has treated people with chronic, complex symptoms related to prolonged stress-response dysfunction, including many who had spent years without a clear explanation for why they still felt unwell.

Clinical Focus

What kept showing up, patient after patient.

Dr. Neville has spent much of his career treating people whose symptoms crossed several systems at once — fatigue, disrupted sleep, anxiety, brain fog, metabolic changes, digestive problems, pain, immune symptoms, and increasing intolerance to stress.

Over time, Dr. Neville became increasingly interested in why the same clusters of symptoms appeared across patients who had very different diagnoses and treatment histories.

That observation became the basis of his Trilateral Method, which focuses on dysfunction in the limbic system, autonomic nervous system, and the HPA axis as three recurring parts of the same clinical picture.

Credentials

More than two decades of clinical work behind the approach.

Naturopathic Physician License #000589
Department of Public Health, State of CT

Doctor of Naturopathic Medicine, Bastyr University

Completed his naturopathic medical education at Bastyr University.

24+ years in clinical practice and more than 6,000 patients treated

Director, Clymer Healing Center
Leads the clinical work of Clymer Healing Center and oversees the development of its approach to Adrenal Fatigue and chronic stress-response dysfunction.

American Association of Naturopathic Physicians (AANP) Professional member profile.

Pennsylvania Association of Naturopathic Physicians (PANP) Professional member profile.

Weston A. Price Foundation Member

The Physiology

The symptoms differed. The dysfunction kept repeating.

Over years of treating people with Adrenal Fatigue, Dr. Neville kept seeing the same three systems involved: the limbic system, autonomic nervous system, and HPA axis.

That observation became the basis of his Trilateral Method, which considers the brain, nervous system, and hormonal stress response together rather than approaching each in isolation.

His Approach

Why the right treatment can be wrong when your stress response isn't ready

Dr. Neville’s approach is based on a problem he has seen repeatedly in chronic stress-response illness: the same intervention can help at one stage and be poorly tolerated at another.

A patient’s sleep, energy, blood pressure, digestion, mood, hormone function, medication tolerance, and response to stress can shift as the condition changes. That means treatment cannot simply be a fixed list of therapies applied to every patient in the same order.

Care is adjusted according to what the patient is able to tolerate, which symptoms are most limiting, how the stress response is behaving at that point, and how the patient responds to each step. Testing and clinical follow-up are used to guide those decisions over time.

The result is a treatment process that is deliberately sequenced rather than symptom-driven.

In Practice

What people remember about being treated by Dr. Neville.

I have made a lot of progress

"Dr. Neville is the most knowledgeable doctor that I've worked with in my 16 years of trying to heal from from chronic fatigue. I have made a lot of progress and learned a lot from Dr. Neville. Also, his team is full of wonderful people. I recommend signing up for one of Dr. Neville's programs for anyone wanting to take their life back from chronic illness, especially if you have been struggling for a long time."

-Haidy Peterson

I'm forever grateful

I had an amazing experience with the 8 week program. The team listened were kind and were compassionate when I was having a hard time!! Dr. Neville knows what he is doing and can help you heal as he did me! Im forever grateful.

-Veronica Cafaro

-Veronic Cafaro

-Veronica Cafaro

Seen, heard, and understood

Dr. Neville has taken the time to listen to me and explain thoroughly what I need to do to help myself. He is very knowledgeable about the condition and really takes the time to guide you through the healing process. I feel so fortunate to have found Dr. Neville and appreciate all his hard work.

-Robert Smith

-Marlene Howland

Media

Conversations about stress physiology, chronic symptoms, and recovery.

Dr. Neville has appeared in interviews, podcasts, publications, and live presentations discussing stress physiology, sleep, chronic fatigue, and Adrenal Fatigue.
Interview on sleep, cortisol rhythms, and the physiology behind disrupted rest – Medium Magazine
Podcast guest on THERAPY+ (Therapy Plus) — a conversation on stress, Adrenal Fatigue, and why so many people feel burned out. May 2026
Video conversation with hypnotherapist Jenny Lynn — The Therapeutic Puzzle: Naturopathy and Hypno-psychotherapy — exploring where naturopathic and hypnotherapeutic approaches to ME/CFS overlap and diverge. April 2026

Feature on stress-response system dysfunction and whole-body patterns – Postscript
A video conversation about stress, healing, and long-term recovery patterns: “The Therapeutic Puzzle: Naturopathy and Hypno-psychotherapy”
Guest speaker at Ultimate Freedom Live 2025 — a presentation on stress, performance, and recovery in high-demand environments.
Podcast guest on BalancedLife with Debi Carlin Boyle — a conversation on how Adrenal Fatigue takes over the body.

Explore

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LEARN

Explore Dr. Neville’s Work

Articles on Adrenal Fatigue, the stress-response system, symptoms, treatment, and recovery.

ASSESS

Do You Have Adrenal Fatigue?

Dr. Neville’s symptom self-assessment takes about six minutes.

TALK

Speak With Our Patient Coordinator

Speak with us about Dr. Neville’s one-on-one programs before beginning care.