Medical Weight Loss Clinic in Centralia & chehalis, WA

If You’ve Done Everything Right and Still Can’t Lose Weight — Your Biology Needs a Clinical Answer

Our weight loss program combines GLP-1 weight loss injections with a detailed metabolic evaluation to help you identify biological barriers, break through plateaus, and maintain your goal weight sustainably. 

When people search for a weight loss clinic, it’s rarely just about the number on the scale. 

They want their energy back. Their spark. Their confidence.

But if you’re like most of our patients, your body just isn’t responding the way it used to.

You’re doing everything “right,” and still not seeing the progress you were promised.

You’ve tried everything, but nothing works for long.

maybe you have…

  • Cut carbs
  • Added steps. 
  • Weighed food, counted calories, and tracked macros. 
  • Tried weight loss injections like semaglutide or tirzepatide. 
  • Have lost some weight… but always gain it right back.

“I can’t lose weight no matter what I do.”

If that sounds familiar, you’re not alone. Most of our patients came to us feeling this exact same way.

Most of our patients were struggling with the exact same issues: 

  • “Lost 10 percent of my weight without doing any real dieting. 

    I had been working hard with calorie reduction and exercise and wasn’t getting anywhere until I was prescribed Semaglutide. I was concerned about the expense but when you consider the amount of money saved on food, alcohol and new wardrobe, it probably saved me money. 

    I have not yet hit my weight loss goals but it is within reach and I truly believe that I will get there… Just 10 more pounds!”
    Troy
  • “Evolution Health helped me to lose 60 lbs in only 4 months by using tirzepatide. They are friendly and knowledgeable and offer so many health services. Go there today and better your life!”
    Bryan
  • “I had my first visit at this clinic yesterday and I can’t tell you how wonderful my experience was with Deb Gross. 

    I feel like I finally found someone who cares about people who are overweight and need help from a medical professional to take the weight off. Her staff is so kind and welcoming when you come into the office. 

    I can’t speak highly enough about this place and I am so excited that we finally have weight loss options that are financially achievable and the support from her to get where I need to be.”
    Cheri
  • “Deb and her staff are wonderful! I came to her wanting to lose weight and get my cycle back so my husband and I could start a family. 

    Deb laid out the plan for me and after a year of losing weight, my cycle is back and we are pregnant! 

    I am beyond thankful for this clinic and I wholeheartedly recommend them to anyone!”
    Kiley
  • “I started coming to this clinic for help with weight loss and have been beyond pleased with my experience. The visit I had was very informative. 

    The provider I met with really took the time to listen and understand all of my concerns I had. 

    I have already began to see weight loss since my visit. I highly recommend this clinic to anyone with weight loss concerns/guidance.”
    Alexis
  • “UPDATE : Deb and her team are amazing!!! I went to them after having health issues and wanted to lose weight.

    With all their help and advice I have officially lost 80 pounds and I couldn’t have done it without them.

    I highly recommend them if you are struggling with your weight.”
    Cassondra
middle aged woman before and after weight loss in centralia wa

Weight Loss Injections Can Help

What are semaglutide and tirzepatide?

GLP-1 medications, like semaglutide and tirzepatide, are designed to help regulate appetite, stabilize blood sugar, and support weight loss by mimicking natural hormones that help you feel full longer. 

At Evolution Health, we often prescribe compounded GLP-1 medications: a safe, effective, and more affordable alternative to the name brands. 

While compounded medications are not FDA-approved, they are legally prescribed by licensed providers and made in FDA-registered 503A compounding pharmacies. 

Each dose is carefully calibrated to your body, your goals, and your progress.

For many people struggling to lose weight, GLP-1s can be life-changing…

But for many of our patients, GLP-1s weren’t enough on their own.

Some patients come to us after trying semaglutide or tirzepatide through a telehealth provider or big box clinic. 

Most made some progress but plateaued. Some made no progress at all. Nearly all of them gained back the weight they did manage to lose. 

When you reach this point, you may start wondering if something deeper is going on in your body. 

You’re probably right.

Here’s what’s really happening

Semaglutide and tirzepatide are powerful medications for weight loss. 

But in our experience, the majority of patients who could benefit most from these GLP-1 medications are also suffering from underlying metabolic barriers that prevent them from working properly.

woman leaning on kitchen counter with sad expression and body language

The two biggest culprits? Insulin resistance and thyroid dysfunction.

Insulin Resistance and Weight Loss 

When your cells stop responding to insulin, your blood sugar stays high. This makes it harder to burn fat, causes weight gain around the midsection, and makes your body more resistant to GLP-1 medications.

Thyroid Weight Loss Challenges

Low thyroid function slows your metabolism and drains your energy. Even if your basic thyroid labs are “normal,” deeper testing often reveals underlying issues. When we address thyroid challenges directly, the weight starts coming off quickly and consistently.

Most providers aren’t looking at these details. We are.

We’re not here to sell you a prescription and rush you out the door.

We’re here to help you understand what’s happening in your body and finally do something about it.

The Evolution Health Medical Weight Loss Program

This structured, medically-guided weight loss program combines GLP-1 medications, thorough metabolic evaluation, and evidence-based root-cause care to remove the barriers preventing your body from shedding weight. No guessing, no gimmicks. Just informed care, long-term progress, and a provider who walks the journey with you.

Book a Consultation

How it Works

01.

Lab Testing and Intake

We run a full panel of labs to evaluate hormones, insulin, thyroid, and other metabolic markers that may be hurting your weight loss progress. 

02.

One-on-One Consultation

You’ll meet with your provider for a 60-minute consultation to talk through your health history, symptoms, questions, and weight loss goals.

03.

Personalized Plan

We create your customized weight loss program, walk you through what to expect, and you begin your GLP-1 weight loss medications that same day.

04.

Ongoing support

Each month, we review your progress, adjust your plan, and offer guidance based on your body’s real-time feedback.

Let’s Get Started

What You Get

  • Full lab panel including hormone and thyroid testing
  • Compounded semaglutide or tirzepatide (as determined by your provider)
  • Full lab workup at your very first visit
  • 60-minute new patient consultation
  • Weekly GLP-1 injections
  • Insulin-sensitizing support medications, as needed
  • Data-based diagnosis of weight resistance factors
  • Personalized supplement and nutrition guidance
  • Monthly provider check-ins to track your progress
  • Expert support for hormone, thyroid, and metabolic optimization

You can start medication the same day as your initial appointment. We use your labs to optimize your plan and personalize your care as your body changes over time.

See FAQs Book Now

Weight loss is easy when you’re armed with information – and genuine support

We don’t do generic diet plans, one-size-fits-all weight loss shots, or rushed 10-minute visits. 

We designed this program to provide the intentional clinical care you deserve. We take the time to explain, troubleshoot, and support you as your body changes. 

We’re here for the entire journey.

Meet yOUr Care Team
headshot of Debra Gross, ARNP, at Evolution Health in Centralia, WA
headshot of Ellen Gish, ARNP, at Evolution Health in Centralia, WA

You can lose the weight — for real this time

“I ended up losing approximately 40 lbs. Thankfully, I did not have any side effects other than being tired the first two days after an injection. 

I had to take minimal doses and still lost weight. 

I feel great physically as well as emotionally. Just not carrying around that extra weight allows me to move more freely. 

I wish everyone could have such a positive experience as I have had. The support from Deb, Ellen and staff has been tremendous. 

I am now weaning off of Tirzepatide and feel confident with watching my protein intake and exercising, along with Deb’s support, I will keep the weight off.”

Candace, 40lbs lost

Hundreds of our patients, like Candace, already have. 

Once you identify your unique biochallenges, you will, too.

Let’s get started

Here’s How to Get Started

We make the process simple. Book your consultation. Complete your lab work. Meet with your provider. Get a plan that actually works, and a partner who’ll help you follow it.

Schedule Now

Frequently Asked Questions

You’re not alone. Many of our patients come to us saying, “I can’t lose weight no matter what I do.” Their struggles are rarely a matter of simply lacking discipline or motivation. In fact, most are highly disciplined and are simply not seeing the results they should be.

This happens because they are swimming upstream, working against underlying metabolic factors that are limiting their progress. That’s exactly why we start with labs and a full health history, so we can uncover the real reason your body refuses to keep the weight off. Our deep dive into hormones, thyroid, and metabolic markers helps uncover what’s been holding you back.

Once we address your underlying metabolic conditions, you may finally see improved weight loss with the assistance of GLP-1 medication. 

Yes, we work with a lot of people in that exact situation. GLP-1 medications like semaglutide and tirzepatide can help with weight loss, but they’re not always enough on their own. If your provider didn’t look at things like your thyroid function, insulin resistance, or overall metabolic health, then it’s possible the medication was working against unresolved issues.

We run full lab work to figure out what’s actually going on under the surface, because if something like insulin resistance is driving your weight gain, then simply taking a GLP-1 might not be enough to see results. We also look at dosing, timing, and side effects to make sure the medication is being used correctly.

So yes, if GLP-1s didn’t work for you before, that doesn’t mean they never will. It just means there’s more to look into: and that’s exactly what we do.

Insulin resistance is one of the most common metabolic barriers to sustainable weight loss. We test for this in your initial lab panel and use your results to create a plan that addresses blood sugar, appetite regulation, and long-term fat loss.

Yes. “Thyroid weight loss” struggles are real, and also frequently missed by providers who only run basic labs. We look deeper to identify underactive thyroid function that may be contributing to your stalled progress.

Absolutely. Many of our patients are dealing with what’s often called hormone weight loss resistance: when shifting estrogen, progesterone, or testosterone levels make it harder to lose weight, no matter what you try. We test for these imbalances as part of your evaluation and offer treatment options when hormones are part of the issue.

Whether or not weight loss is your main goal, we also offer hormone therapy for women and hormone therapy for men to help restore balance, improve energy, and support long-term health.

Semaglutide is a GLP-1 receptor agonist medication that helps regulate appetite, improve insulin response, and slow gastric emptying, which helps you feel full longer. Evolution Health only uses compounded semaglutide, which is not the same as name-brand versions (like Wegovy® or Ozempic®) and is not FDA-approved. However, many patients experience excellent results with this more accessible alternative. We prescribe compounded semaglutide only when appropriate as part of a personalized, medically supervised program.

Tirzepatide is a dual GIP/GLP-1 receptor agonist medication that reduces appetite and supports blood sugar regulation. Like semaglutide, we offer a compounded version, which is not the same as name brands (like Mounjaro® or Zepbound®) and is not FDA-approved. Our providers tailor your dosage to maximize safety and results. We prescribe compounded tirzepatide only when appropriate as part of a personalized, medically supervised program.

Weight loss progress is highly individualized. Some patients begin seeing results within weeks, while others take longer depending on their metabolic health, hormone levels, and overall goals. If you’re consistent with your plan, most people see sustainable results in 6-9 months. As we near your goal weight, we shift into maintenance planning to help you sustain your results.

You can, but we’ve had many patients come to us after doing just that. Typically, they lost a little weight, plateaued, then gained it all back. The difference with Evolution Health’s approach is that we identify and treat the underlying issues that block lasting progress. Our care is comprehensive, medically supervised, and designed for real results that last. 

Your initial consultation is $450.00, which includes a full lab panel (hormone, inflammation, insulin, and thyroid markers) and a 60-minute visit with your provider. Most patients start their personalized GLP-1 program that same day. Because your medication and program plan are tailored to your labs and goals, your provider will go over exact program pricing with you during your consultation, so you always know exactly what’s included and what to expect.

Book your Consultation

Book Medical Weight Loss in Chehalis, WA

As a trusted Centralia weight loss clinic, Evolution Health is proud to provide personalized, root-cause care for overweight patients throughout the region. From the first lab to the final follow-up, our clinic is built to help you get answers and results. 

We serve clients throughout Centralia, Chehalis, Olympia, Longview, and beyond, both in person and via telehealth throughout Washington and Oregon.

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Finance your care with CareCredit

We accept CareCredit, which allows you to pay for your treatment over time. You can apply online before your visit or ask us for help during your appointment.

Apply for CareCredit