GLP-1 + GLP-3 Therapy · Metabolic + Longevity Medicine

This isn't the weight loss drug
you've been hearing about.
This is the next generation.

GLP-1 receptor agonists changed metabolic medicine. But GLP-3 — the triple receptor agonist class led by Retatrutide — takes it further than anyone expected. We're talking about results that rival bariatric surgery, without the surgery. Metabolic, cardiovascular, and longevity benefits that go far beyond the number on a scale.

I work with these as a researcher, a clinician, and someone who is deeply committed to one principle: the medication is only as good as the body receiving it. Which is why every patient in this program works with me on the nutrition side — because weight loss without intentional support isn't weight loss. It's decline with a smaller number.

23.7% Body weight reduction in Phase 3 trials
3 Receptor targets — GLP-1, GIP, and glucagon
2027 Expected FDA approval for Retatrutide
The Science

Why GLP-3 is different
from everything before it.

GLP-1 agonists like semaglutide (Ozempic/Wegovy) and tirzepatide (Mounjaro) work by activating one or two receptors involved in appetite, insulin response, and metabolism. They work well. Retatrutide — the GLP-3 class — activates three: GLP-1, GIP, and glucagon. That triple mechanism creates a fundamentally different metabolic response.

Standard GLP-1
Appetite suppression
Blood sugar regulation
~10-15% weight loss
Single receptor target
Tirzepatide (Dual)
GLP-1 + GIP activation
Stronger metabolic effect
~15-20% weight loss
Cardiovascular benefits
Retatrutide (GLP-3)
GLP-1 + GIP + Glucagon
Up to 23.7% weight loss
Liver fat reduction
Longevity marker improvements
"Retatrutide produced weight loss equivalent to bariatric surgery in Phase 3 trials. But the number on the scale is the least interesting thing about what this class of medication does to the body's metabolic architecture."

The implications extend beyond weight. Liver fat reduction. Cardiovascular risk markers. Inflammatory load. Insulin sensitivity. Cognitive function. These are longevity biomarkers — and this class of medication is showing meaningful effects across all of them. Which is exactly why it needs to be supported properly.

The Problem with Medication Alone

Weight loss without support
isn't weight loss. It's decline.

When appetite drops dramatically, most people don't eat enough protein. They lose muscle alongside fat. Their energy crashes. Their micronutrient status deteriorates. They feel worse even as the number goes down. And when they stop the medication — which many people eventually do — the weight returns faster than it left, because the muscle is gone and the metabolism has compensated.

This is not a medication problem. It's a support problem. The medication works. The body just needs to be guided through the process intelligently — with the right nutrition structure, the right supplementation, and clinical oversight that goes beyond a prescription.

This is why every patient I work with in this program works with me on the nutrition side. Non-negotiable. Not because I need the business — because it's the only way this makes clinical sense.

Physician Partnership

Prescribing + nutrition.
Together. From the start.

I work in partnership with Dr. Stein, MD in Boca Raton — a physician who shares my philosophy that these medications are tools, not solutions. Together we provide the complete picture: physician oversight and prescribing on one side, precision nutritional support and clinical monitoring on the other.

Physician Partner
Dr. Drew Stein, MD · Boca Raton, Florida
Physician oversight, prescribing authority, and medical monitoring for all GLP-3/Retatrutide patients. Dr. Stein is doing pioneering work in exosomes and cell therapies alongside traditional and integrative medicine. Working alongside Dr. Heather Behr's nutritional and metabolic support program to ensure every patient is comprehensively supported through treatment.
★ Nutrition Program Required
Access to GLP-3/Retatrutide therapy through this practice requires enrollment in Dr. Behr's medical nutrition support program. This is not optional — it is the clinical standard of this practice. Weight loss that occurs without intentional nutritional support is weight loss at the expense of muscle, energy, and long-term health. That's not something I'm willing to facilitate.
The Nutrition Support Program

Medical Nutrition + Metabolic Support
for GLP-3 Patients.

Designed to support the body during treatment — so weight loss occurs in a way that is stable, sustainable, and physiologically sound. Not a diet plan. A clinical nutrition protocol built around what's actually happening in your body during this process.

01
Baseline Assessment
Functional and conventional lab testing to establish your starting point — nutrient status, metabolic markers, inflammation, and risk factors. We don't guess what your body needs. We measure it.
03
Nutrition + Physiological Support
The core of the program. Guidance on eating with reduced appetite, a protein-focused approach to preserve muscle mass, practical meal frameworks (not rigid plans), and emphasis on adequate intake with smaller volume. This is where most programs fail their patients — we don't.
04
Organ System Support
Targeted support for the systems most impacted during significant weight loss: liver (metabolic processing), pancreas (digestion and blood sugar regulation), and kidneys (hydration and filtration). Side effect management built in — nausea, early fullness, constipation, fatigue — addressed proactively, not reactively.
05
Muscle Preservation Protocol
Protein optimization and basic strength-based movement guidance. Protecting muscle mass during weight loss is non-negotiable for long-term health and metabolic function. This is built into every protocol from day one.
06
Ongoing Monitoring
Weight and progress tracking, intake and appetite check-ins, symptom review. Regular contact throughout treatment so nothing gets missed and adjustments happen in real time.
Who This Is For

The right tool
for the right person.

This is not for everyone — and I mean that as a clinical statement, not a marketing one. GLP-3 therapy is a powerful intervention. Powerful interventions require the right indication, the right preparation, and the right support structure.

This program is appropriate for
People with significant metabolic dysfunction — insulin resistance, metabolic syndrome, obesity-related inflammation — where weight loss is a clinical necessity, not just a goal
High performers hitting a metabolic wall — doing everything right and not moving. Where the data shows the metabolism needs a systemic reset
Longevity-focused individuals who understand that body composition, visceral fat, and metabolic flexibility are core longevity biomarkers — and want to optimize them with precision
People committed to doing this right — who understand that the medication is one piece of a larger protocol, and are willing to support it properly
Investment

Program investment varies based on the testing indicated, the supplement protocol required, and the level of monitoring needed. All pricing is discussed transparently on your discovery call. Medication costs are separate and managed through Dr. Stein's practice.

"The medication opens the door.
The nutrition program walks you through it."

Book a free discovery call with Dr. Heather Behr. We'll look at your history, your goals, and whether GLP-3 therapy is clinically appropriate — and what it would look like to do this properly.