Weight Loss Treatments

Med Matrix in South Portland, Maine offers medical weight loss programs built on lab testing, not calorie counting. We test fasting insulin, thyroid function, sex hormones, inflammatory markers, and metabolic health before prescribing semaglutide, tirzepatide, or other GLP-1 medications. Every protocol includes body composition tracking and ongoing lab monitoring.

4.9 stars150+ reviews3,000+ patients7 providers
Weight Loss Treatments - functional medicine at Med Matrix South Portland Maine

Why Diets Keep Failing You

You've cut calories. You've done keto. You've tracked macros. You've hit the gym four days a week. And the scale barely moves. Or it moves for a month, then stalls. Or the weight comes off and comes right back. Every time.

Most people blame themselves. Not enough discipline. Not enough willpower. Not enough effort. But willpower has nothing to do with it when your metabolism is working against you.

Here's what's actually happening in your body:

  • Insulin resistance. Your cells have become resistant to insulin's signal to pull glucose out of the bloodstream. So glucose stays high, fat burning gets blocked, and your body stores everything you eat. You can be eating clean and still gaining weight because the fuel isn't getting into your cells.
  • Thyroid dysfunction. Your thyroid sets your basal metabolic rate (how many calories you burn at rest). If your T3 is low, even eating 1,500 calories a day can put you in a caloric surplus. Your brain literally thinks you're starving, and it drives you to eat more. This is the same neurological pattern seen in obesity.
  • Hormone decline. Testosterone in both men and women improves insulin sensitivity and determines where nutrients go (muscle or fat storage). Low testosterone means low dopamine, which means low motivation to exercise. It's a chain reaction. Estrogen and progesterone shifts during perimenopause and menopause drive weight gain that no amount of dieting can override.
  • Chronic inflammation. Stress, poor sleep, gut dysfunction, and environmental toxins all raise cortisol and inflammatory markers. Cortisol promotes fat storage around the midsection and destabilizes blood sugar. Two or three nights of poor sleep raises ghrelin (hunger hormone) and drops leptin (fullness hormone).

None of these show up on a standard annual physical. Your doctor checks your weight, maybe your blood sugar, and tells you to eat less and move more. That advice works when the problem is behavior. It fails when the problem is metabolic. And for most patients we see, it's metabolic.

I want to want to get out of bed.

Lindsay: Lost 43 Pounds, Sleeping Without Medication

Patient Story

Life-changing. It's just incredible how seeing a doctor who cares and medicine that works.

Gordon: 50 Lbs Lost, Off Three Medications

Patient Story

Oh, it's like you wake up and you just feel better. It's simple. It's like, wow, I just feel better. I've lost that weight and just more energy and not swollen as much and you feel like you can tackle your day better.

Anthony: 37 Lbs Lost, Brain Fog Gone

Patient Story

Everything Under One Roof

Advanced testing, personalized protocols, and real results from a team that treats the whole picture.

How Med Matrix Approaches Weight Loss

We don't start with a diet plan or a prescription. We start with data.

Your first visit is a 30-minute testing appointment. We draw a panel of roughly 80 biomarkers and run a full InBody 770 body composition scan. We're not just checking your weight. We're measuring fat mass, lean muscle mass, visceral fat, hydration, and your basal metabolic rate. On the blood side, we're looking at everything that affects your ability to lose weight:

  • Fasting insulin, glucose, HbA1c (insulin resistance and diabetes markers)
  • Full thyroid panel (TSH, free T3, free T4, reverse T3, antibodies)
  • Sex hormones (testosterone, estrogen, progesterone, DHEA)
  • Inflammatory markers (CRP, ESR)
  • Cortisol and stress hormones
  • Cholesterol and triglycerides
  • Nutrient levels (vitamin D, B12, ferritin, magnesium, zinc)

After your labs come back, one of our 7 providers reviews the full picture: labs, body composition, health history, medications, lifestyle, goals. Then you sit down for a one-hour visit where you go through every result together and build a plan.

That plan might include a GLP-1 medication like tirzepatide. It might include hormone optimization. It might include thyroid treatment, dietary changes, targeted supplements, or a combination. It depends on what your body is actually telling us.

About GLP-1 medications. Tirzepatide and semaglutide are peptides that reduce appetite, quiet food cravings (what providers call "food noise"), and improve blood sugar regulation. They work by affecting multiple layers of your metabolism simultaneously. They're not a magic pill. They're a tool. Without addressing diet, sleep, stress, hormones, and gut health alongside the medication, the weight comes back when you stop. That's why working with a provider who manages the full picture matters so much. Many patients tell us the GLP-1 permanently reframed their relationship with food and portion sizes, even after they stopped taking it.

We use compounded GLP-1 medications from regulated pharmacies. This lets us start at lower doses and titrate precisely, which reduces side effects and keeps costs down compared to brand-name auto-injector pens.

Lindsay: Lost 43 Pounds, Sleeping Without Medication - patient testimonial video from Med Matrix
Patient Story

I want to want to get out of bed.

Lindsay: Lost 43 Pounds, Sleeping Without Medication

Watch at 0:00

How It Works

Your path to feeling like yourself again, step by step.

01.

Free Discovery Call

  • Talk with our patient coordinator about your goals, symptoms, and concerns
  • Understand your options and what to expect
  • Get matched with the right provider for your needs

Result: A clear next step personalized to your situation, with no pressure or commitment.

02.

80+ Biomarker Test & Full Body Scan

  • Comprehensive panel of 80+ lab markers
  • Full body composition scan
  • In-depth health questionnaires

Result: A complete picture of your health, so nothing gets missed.

03.

Medical Team Reviews Everything

  • Providers review your labs, medical history, and questionnaires
  • Cross-reference symptoms with biomarker patterns
  • Identify root causes, not just surface symptoms

Result: A personalized treatment plan built from real data, not guesswork.

04.

60-Minute Provider Consultation

  • Sit down with your provider for a full hour
  • Go over every result in detail
  • Build your personalized plan together

Result: You leave with a clear understanding of what is happening and exactly what to do about it.

05.

Ongoing Support & Progress

  • Continued monitoring of your labs and markers
  • Adjustments to your plan as your body responds
  • Direct access to your care team

Result: Real, measurable progress you can feel and see in your numbers.

Start Here

Real Patients, Real Results

4.9 stars150+ reviews3,000+ patients7 providers

Gordon turned 65 and weighed 285 pounds. He'd been seeing his primary care doctor for 40 years with no resolution of his migraines, fatigue, high blood pressure, high cholesterol, or arthritis. His doctor just kept covering up symptoms with prescriptions. Over about a year at Med Matrix, Gordon lost 50 pounds, came off three prescription medications, and resolved his blood pressure, cholesterol, knee pain, and arthritis through testing, dietary changes, and supplements.

Anthony came in after 8 months of feeling off, low energy, and brain fog with no progress from his regular doctors. Family members who were already patients told him about Med Matrix. Testing revealed he was one point away from pre-diabetes. Through a combination of tirzepatide, dietary guidance, and supplements, he lost 37 pounds, cleared the brain fog, and got his energy back.

These aren't outliers. We've treated over 3,000 patients at Med Matrix with a 4.9-star rating across 150+ Google reviews. Most of the patients who come in for weight loss have already tried everything their conventional doctor suggested. What they hadn't tried was finding out why the weight was there in the first place.

Looking for semaglutide weight loss near you? We serve patients across Maine and southern New Hampshire. Find your nearest location on our GLP-1 weight loss locations page.

Gordon: 50 Lbs Lost, Off Three Medications - patient testimonial video from Med Matrix
Patient Story

Life-changing. It's just incredible how seeing a doctor who cares and medicine that works.

Gordon: 50 Lbs Lost, Off Three Medications

Watch at 2:00
Anthony: 37 Lbs Lost, Brain Fog Gone - patient testimonial video from Med Matrix
Patient Story

Oh, it's like you wake up and you just feel better. It's simple. It's like, wow, I just feel better. I've lost that weight and just more energy and not swollen as much and you feel like you can tackle your day better.

Anthony: 37 Lbs Lost, Brain Fog Gone

Watch at 2:10

What Is the Difference Between Medical Weight Loss and a Diet?

A diet is a set of food rules. You follow them, you lose weight. You stop following them, the weight comes back. That cycle has played out for millions of people, and the failure rate is not because of a lack of discipline. It is because diets do not address the biological reasons weight is being held in the first place.

Medical weight loss starts with testing. Before you change a single thing about your eating, your provider runs a panel of 80+ biomarkers and an InBody 770 body composition scan to find out what is actually going on in your body. The blood work covers fasting insulin, full thyroid panel, sex hormones, inflammatory markers, cortisol, nutrient levels, and metabolic markers. The body composition scan measures fat mass, lean muscle, visceral fat, hydration, and your basal metabolic rate.

Why does this matter? Because two people who weigh the same can have completely different reasons for holding onto weight. One may have undiagnosed insulin resistance. Another may have a thyroid that is technically "normal" by lab standards but functionally underperforming. A third may have tanked testosterone and elevated cortisol from chronic stress. A diet treats all three the same way. Medical weight loss treats each one differently, based on data.

At Med Matrix, your provider builds a plan around what your labs reveal. That plan might include a GLP-1 medication like tirzepatide or semaglutide. It might include hormone optimization, thyroid treatment, dietary guidance, targeted supplements, or a combination. The point is that the protocol matches the problem, not the other way around.

The other difference is monitoring. On a diet, you step on a scale and hope for the best. In a medical weight loss program, your provider tracks body composition over time, reruns labs to measure metabolic improvement, adjusts your protocol as your body responds, and ensures you are losing fat (not muscle). That is the difference between a plan and a guess.

What Are the Eligibility Criteria for Medical Weight Loss?

Medical weight loss at Med Matrix is not limited to patients with a specific BMI. If your weight is affecting your health, energy, sleep, mood, or quality of life, you may be a candidate.

That said, our providers evaluate several factors during your initial workup:

  • Metabolic markers. Fasting insulin, glucose, and HbA1c show whether insulin resistance is present. This is the most common metabolic blocker we find, and it is almost never tested on a standard annual physical.
  • Thyroid function. A full thyroid panel (TSH, free T3, free T4, reverse T3, antibodies) reveals whether your metabolism is being throttled at the hormonal level.
  • Hormone status. Low testosterone (in both men and women), estrogen imbalance, and progesterone decline all affect body composition and fat storage patterns.
  • Inflammatory load. Chronic inflammation from stress, poor sleep, gut dysfunction, or environmental exposures raises cortisol and promotes fat storage around the midsection.
  • Body composition baseline. The InBody 770 scan shows exactly where you are starting: fat mass, lean muscle, visceral fat, and metabolic rate. This becomes the baseline your provider tracks against.

If a GLP-1 medication is appropriate, your provider will discuss the options (typically tirzepatide or compounded semaglutide), the expected timeline, potential side effects, and the lifestyle factors that need to change alongside the medication. GLP-1s are a tool inside a plan, not a standalone fix.

Patients who are not candidates for GLP-1 medications (due to medical history, current medications, or provider judgment) still benefit from the full metabolic workup. Many patients lose significant weight through hormone optimization, thyroid treatment, dietary changes, and targeted supplementation alone.

We treat patients across Maine and southern New Hampshire. If you are looking for a medical weight loss program near you, our South Portland clinic serves the greater Portland metro area.

How to Build Healthy Habits Alongside Weight Loss Treatment

Medication can change your appetite and improve your metabolic function. But it cannot build the habits that keep the weight off after you stop taking it. That is the part most weight loss programs skip entirely.

At Med Matrix, your provider works with you on the behavioral and nutritional side from day one. Not with a generic meal plan or a calorie target. With specific guidance based on your labs, your body composition, and your daily life.

Protein first. When you are on a GLP-1, your appetite drops. That means you eat less overall, but if you do not prioritize protein, a significant portion of the weight you lose can be lean muscle mass. Your provider will set a protein target based on your body weight and composition. For most patients, this means 0.7 to 1 gram of protein per pound of body weight per day.

Resistance training is not optional. Muscle is the most important organ for metabolic health and longevity. Three to four sessions per week with weights is the recommendation for patients on GLP-1s. You do not need to train like a competitive athlete. You need to give your body a reason to hold onto muscle while it sheds fat.

Sleep matters more than most people realize. Two or three nights of poor sleep raises ghrelin (the hunger hormone) and drops leptin (the fullness hormone). It also spikes cortisol, which promotes fat storage. If your sleep is broken, your provider will address it as part of the plan.

Stress management is part of the protocol. Cortisol drives fat storage around the midsection and destabilizes blood sugar. Your provider will assess your stress load and recommend realistic strategies. Nobody can eliminate stress overnight, but small, consistent changes in sleep, recovery, and daily habits compound over time.

The patients who keep the weight off are the ones who use the medication window to build new patterns. The GLP-1 quiets the food noise and gives you breathing room to change how you eat, move, sleep, and manage stress. By the time you come off it, you are a different person metabolically and behaviorally. That is the goal.

Common Symptoms We See

  • Weight that will not budge despite dieting and exercise
  • Rapid weight regain after stopping a diet or program
  • Constant hunger, food cravings, or persistent food noise
  • Fatigue or low energy, especially in the afternoon
  • Belly fat or midsection weight gain that will not respond to exercise
  • Brain fog or difficulty concentrating
  • Poor sleep or waking unrefreshed
  • Mood swings, irritability, or low motivation
  • Sugar cravings or blood sugar crashes between meals
  • Feeling like your metabolism has stalled or slowed down
  • Previous weight loss programs that stopped working after a few weeks
  • Being told to 'eat less and move more' with no lab work done

What We Test for This Condition

Fasting Insulin

Catches insulin resistance years before diabetes develops. Elevated insulin blocks fat burning even when you are eating well.

HbA1c & Fasting Glucose

Shows your average blood sugar over 2 to 3 months. Identifies pre-diabetes and metabolic dysfunction early.

Full Thyroid Panel (TSH, Free T3, Free T4, Reverse T3, Antibodies)

Your thyroid sets your basal metabolic rate. If T3 is low, even a 1,500-calorie diet can put you in a surplus.

Testosterone (Total & Free)

Low testosterone reduces insulin sensitivity and shifts nutrient partitioning toward fat storage instead of muscle.

Estradiol & Progesterone

Estrogen and progesterone shifts during perimenopause, menopause, or hormonal decline drive weight gain that dieting cannot override.

Cortisol

Chronic stress keeps cortisol elevated, promoting midsection fat storage and destabilizing blood sugar throughout the day.

Inflammatory Markers (CRP, ESR)

Chronic inflammation from poor sleep, gut dysfunction, or environmental toxins disrupts metabolic signaling.

Vitamin D, B12, Ferritin, Magnesium, Zinc

Nutrient deficiencies affect energy production, thyroid conversion, hormone synthesis, and recovery from exercise.

Lipid Panel (Cholesterol, Triglycerides)

Triglyceride-to-HDL ratio is a strong marker of insulin resistance and metabolic health.

InBody 770 Body Composition Scan

Measures fat mass, lean muscle, visceral fat, hydration, and basal metabolic rate. Tracks whether you are losing fat or muscle.

Who Treats This Condition

These providers specialize in this area and review every patient's case personally.

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Everything you need to make an informed decision: pricing, testing catalog, process timeline, provider bios, and real patient stories. No commitment required.

Pricing breakdown
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Weight Loss Treatments FAQ

Online companies mail you a medication with no monitoring, no body composition tracking, no dietary guidance, and no exit strategy. You lose weight, but you don't know how much of it is muscle. You don't address the hormonal, thyroid, or metabolic issues that caused the weight gain in the first place. And when you stop the medication, the weight comes back because nothing underneath was fixed. At Med Matrix, the GLP-1 is one piece of a plan that includes full lab work, body composition tracking, hormone optimization, nutritional guidance, and ongoing provider supervision.

Not if we address the root causes while you're on it. The medication controls dysfunctional physiology temporarily. It doesn't permanently fix anything. That's why our approach includes fixing insulin resistance, optimizing hormones and thyroid, improving your diet, and building sustainable habits during the time you're on the medication. Many patients tell us the GLP-1 permanently changed their relationship with food and portion sizes. By the time they come off it, they're a different person metabolically and behaviorally.

Initial onboarding runs about $1,200 to $1,500 all-in, covering your blood panel, InBody body composition scan, provider prep, and your full one-hour provider visit. GLP-1 medications through compounding pharmacies are typically less expensive than brand-name versions. Follow-up visits are $275. We accept HSA, FSA, CareCredit, and all major cards. New patients get a $100 voucher toward their first visit.

Yes. Resistance training is not optional. Without it, research suggests a large portion of the weight you lose on a GLP-1 can be lean muscle mass. Muscle is the most important organ for longevity. Losing it while losing fat defeats the purpose. Your provider will talk through a resistance training plan and protein targets specific to your body. You don't need to train like a bodybuilder. Three to four sessions per week with weights is enough for most patients.

That's the most common thing we hear. Patients who have tried every diet, every program, every trainer, and still can't move the weight. In almost every case, the answer is in their labs. Insulin resistance that nobody tested for. Thyroid dysfunction that got missed because their doctor only checked TSH. Low testosterone that nobody thought to look at. Chronic inflammation from poor sleep or gut issues. We find the metabolic blocker, fix it, and the weight starts to move. It's not a willpower problem.

In most cases, yes. Tirzepatide is a dual GLP-1 and GIP receptor agonist, which means it works on two pathways instead of one. It has significantly fewer GI side effects than semaglutide. It also has stronger anti-inflammatory effects. A significant number of patients don't tolerate semaglutide well due to nausea and digestive issues. Tirzepatide is our preferred option for most patients, but your provider will make a recommendation based on your labs and health history.

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