Your health deserves a deeper look.

West Coast Functional Nutrition

a functional nutrition practice

Dr. Courtney Castler, DCN, MS

Step beyond symptom management and cookie-cutter programs. West Coast Functional Nutrition helps you live in alignment with your highest potential guided by science.

A nourishing bowl held in two hands
Conditions & concerns

Conditions and concerns I support

Gut health & digestion

Bloating Constipation Diarrhea Heartburn Abdominal pain IBS Celiac Disease Crohn's Disease Psoriasis Eczema

Cognitive health & mood

Depression ADHD Anxiety Brain fog Poor focus Memory loss Alzheimer's Parkinson's Traumatic brain injury

Immune health & inflammation

Fibromyalgia Headaches Migraines Frequent illness Autoimmune conditions

Metabolic health

Fatigue Difficulty losing weight Intense cravings Mitochondrial dysfunction Elevated fasting glucose, A1C, fasting insulin Post-meal energy crashes High blood pressure Poor eating patterns

Hormone health

Hair loss Perimenopause, menopause, and hormonal transitions Polyendocrine Metabolic Ovarian Syndrome Irregular, painful, or heavy cycles Thyroid-health Sleep disruption, hot flashes, and night sweats

Longevity & disease prevention

Cognitive and metabolic risk Blood sugar control Gut health optimization Bone health and osteoporosis Family history Chronic disease risk Sleep, stress, lifestyle Genetics

Precision health & wellness

Restore your health with a root-cause approach

If you're tired of feeling tired, frustrated with your health, or stuck in a cycle of symptoms without real answers — you are not alone.

At West Coast Functional Nutrition we believe your health deserves more than a quick fix. We go beyond symptom management to uncover the root causes holding you back. Through advanced testing, personalized nutrition, and integrative therapies, we help you restore balance and reclaim the energy you deserve.

See what to expect

A hand holding a bunch of fresh herbs
My story

Meet Dr. Courtney Castler, DCN, MS

DCN — Doctor of Clinical NutritionMS — Master's Human Nutrition in Functional Medicine

My name is Dr. Courtney Castler, and I’m the founder of West Coast Functional Nutrition, a virtual functional nutrition practice based in the Portland area.

West Coast Functional Nutrition was born out of both my clinical training and my personal experience working inside the conventional medical system. Prior to starting my practice, I worked in a hospital setting where I saw firsthand how many patients were leaving appointments with more questions than answers. They were told their labs were “normal,” yet they didn’t feel well, and they weren’t given a clear plan forward.

After completing my doctorate in clinical nutrition, I knew I wanted to build something different. I wanted to create a space where people felt heard, where their symptoms were taken seriously, and where we could actually investigate the root causes of what’s going on in the body.

At West Coast Functional Nutrition, I work with adults who feel like they’ve been overlooked or dismissed in the traditional system. Many of my clients come to me dealing with ongoing gut issues, hormone imbalances, fatigue, or chronic symptoms that haven’t been fully explained.

What makes my approach different is that I don’t just look at isolated symptoms—I look at the whole person. Through personalized nutrition plans, targeted lifestyle strategies, and strategic supplementation, I help clients understand what their body is trying to communicate and give them a clear, actionable path forward.

Because my practice is fully virtual, I’m able to work with clients in a way that’s both accessible and flexible. You can schedule consultations and receive care right from your home, which makes it much easier to stay consistent and supported throughout the process.

At the end of the day, my mission is simple: to make a real difference in people’s lives. I want my clients to feel empowered, informed, and confident in their health again—especially those who have felt unheard for far too long.

If you’ve been struggling without answers, just know there are other approaches out there, and you deserve a plan that truly supports you.

“West Coast Functional Nutrition envisions a future in which chronic symptoms are not dismissed, and people are empowered to take an active role in their health, moving beyond pain, fear, and confusion toward vitality, clarity, confidence, and the freedom to live fully.”
Vision Statement
Why choose West Coast Functional Nutrition?

Not a program. A lifestyle.

Founded by Dr. Courtney Castler, DCN, MS — a functional nutritionist — West Coast Functional Nutrition was created to elevate the way people experience health: with precision, purpose, and ease. The approach draws on genomics, biometrics, and functional nutrition to reduce disease risk, address current concerns, and unlock longevity.

An experience tailored to you

Built around your biology

High Standards

We partner only with advanced diagnostic labs and supplement companies vetted for quality, precision, and scientific integrity.

Results-Driven

We are committed to measurable, meaningful change — pairing advanced tools with personalized strategy to help you reach your goals.

Science-Based

We stay current with clinical research and apply only proven, evidence-based methods that meet a high standard in functional medicine.

Comprehensive

Diagnostics, personal history, nutrition, and lifestyle come together into one roadmap built for lasting vitality and well-being.

Functional lab testing

Lab companies we trust

Functional labs are optional and recommended only when they'll meaningfully change your plan. We order through vetted partners and pass through the lab's own price — there's no markup. Most clients run one to three panels.

DUTCH Test
Genova Diagnostics
Theia
Vibrant Wellness
TruDiagnostic
Thorne
What to expect

A clear path

No mystery, no guesswork.

01

Discovery call

A no-pressure conversation to hear what you're navigating, answer questions, and decide together whether West Coast Functional Nutrition is the right fit.

30 minutes
02

Intake & history

A thorough intake captures your health history, timeline, symptoms, labs, nutrition, lifestyle, and health goals.

Before your first visit
03

Comprehensive consultation

We connect the dots across your story and biology, identify root causes, and decide which functional labs (if any) will sharpen the picture. You’ll leave with a clear understanding of your next steps and how we can best support your path forward.

90 minutes
04

Functional lab testing

Targeted testing — gut, hormones, nutrients, metabolic markers — ordered through vetted labs. We only run labs that will make a difference in your care.

2–4 weeks for results
05

Lab review & your plan

We walk through every result in plain language and translate findings into a personalized nutrition, supplement, and lifestyle protocol.

60 minutes
06

Ongoing support

Health change isn't linear. Follow-ups keep the plan responsive to your progress, your labs, and your life.

Follow-up visits
Investment

Session pricing

Transparent rates.

Start here
30 min

Discovery Call

$25

This 15–30 minute call is a chance to discuss your health goals, current concerns, and whether functional nutrition support is the right fit for you. The $25 call fee will be applied toward your initial consultation if you choose to move forward.

90 min

Initial Evaluation

$350

A comprehensive consultation designed to uncover the full picture of your health.

30 min

Follow-Up

$150

This follow-up session is designed to refine your personalized protocol and address any changes in symptoms, progress, or priorities.

60 min

Lab Review for one advanced panel

$240

A dedicated session where we walk through your test results in detail.

120 min

Lab Review for multiple advanced panels and conventional labs

$325

A dedicated session where we walk through your test results in detail.

Get in touch

Want to know more?

Making a health change can feel overwhelming. I'll help guide you in the right direction.

Start your journey

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