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A Weight Management Approach That Makes Sense.

 

When you stop fighting your biology and start working with it, success becomes your only option.

FREE
3-Day Hunger Hormone Reset Video Series: Watch all 3 Videos today!

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I'm ready to RESET!

 

Hi, I'm Dr. Matthea Rentea—and I've been exactly where you are.

 

I've struggled with my weight ever since kindergarten. 
I know what it's like to lose 10 pounds only to gain back 20. 
I've tried every fad diet, soul-crushing workouts, obsessively counting calories… and still felt like I was "failing."
For years, I believed what our culture teaches us: that inability to lose weight is a moral character flaw. That I just lacked willpower. That I wasn't trying hard enough.  

Turns out, I was wrong. And so is our culture. 

As a physician, I would never tell someone with asthma that their condition is a character flaw. Yet with weight, we apply completely different standards. It's time to change that. 
After more than a decade of helping patients in major medical systems, I specialized in obesity medicine because I was tired of just treating symptoms. I wanted to get to the root causes—insulin resistance, hormonal imbalances, the biological factors that make weight management so challenging. 

 

And here's what I learned: 

Weight struggles aren't about willpower. They're about biology. 

After doing "all the right things" for years with limited success, I finally gave myself permission to work WITH my biology instead of against it. That's why I threw out the traditional diet playbook and created an approach based on adding to your life—more variety, more protein, more joyful movement—instead of the restriction that never works long-term.   

 

I realized working WITH my biology meant using every tool available—including GLP-1 medication. Not because it's a magic bullet—I still have to eat the protein, do the movement, manage my stress—but because it restored the hunger signals that diet culture had completely disrupted. That's why I've made it my mission to remove the shame and empower people with the evidence-based tools they need to succeed—both on and off medication.

Check it out!

The Breakthrough Moments Keep Coming…


”

I was in a very discouraging situation and feeling hopeless with traditional medicine approaches to my weight concerns. I was attracted to Dr. Rentea’s compassionate approach and obvious expertise in obesity medicine. I immediately resonated with her philosophy that weight loss requires a holistic approach, and she has essentially created a master's degree of education for her patients through online classes, podcasts and social media platforms with the latest research in obesity medicine.

I appreciate Dr. Rentea's personal approach to my struggles. She listens and coaches in a way that is pragmatic, individualized and timely. Even though I come with a fairly extensive education in health and wellness, I have learned so much and most importantly have finally experienced success. Dr. Rentea has created a unique program that incorporates positive psychology and obesity medicine science that offers hope, encouragement and results.

  • Meg K


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Dr. Rentea has been a true blessing in my life.  Her expertise, compassion and caring have been the key to help me succeed at my health journey. I have tried many many times before, but this is the first time I have been healthy and successful and feel able to sustain it. I am still in the middle of my journey, but for the first time ever -- I feel that I will be able to reach my goal of a healthy weight and maintain it. Dr. Rentea is so lovely. She is always very communicative and available for questions. I am grateful to be able to work with her. It is changing my life. 

  • Rachel A 


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I absolutely adore Dr. Rentea. She provides so many suggestions on every element of life and I soak up every word she says. What I love most is that Dr. Rentea is so realistic and truly will give you the reality check you need. She’s such a “real” person and makes it so easy to talk to her about anything. I can’t speak highly enough about Dr. Rentea and wish everyone had the opportunity to work with her. The world would be a better and happier place if that were the case.

  • Lindsay A 


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I LOVE the content… I’m just taking it one piece at a time so I can write notes and take it all in. I am SO impressed with Dr Rentea and her empathy, compassion and brilliant way of making the concepts and content digestible (pun intended).

  • Kathryn B


”

Where do I begin? Having a doctor that completely understood EVERYTHING we have been going through was heartwarming and really a complete breath of fresh air. You made me feel like I mattered and my obesity struggles were real. I believe I mentioned this in one of our sessions. All I've ever experienced or heard from professionals was calories in calories out and MOVE and you will lose. You gave us tools.”

  • Rebecca C

Ready to make weight management feel effortless instead of exhausting? 

Join hundreds of people who've stopped fighting their biology.

Get Your Free 3-Day Hunger Hormone Reset Today

Your Complete Toolkit for Sustainable Weight Management

SIGNATURE PROGRAM: The 30/30 Program (6-Week Health Transformation Program)
The weight management approach you literally cannot fail—because we focus on what you ADD, not what you restrict. 
What You'll Add: 
  • 30 different fruits & vegetables (boost gut microbiome diversity) 
  • 30 movement sessions (find what feels good for YOUR body) 
  • 30 grams of protein, 3x daily (satiety, muscle health, metabolism) 
Success becomes inevitable when you stop fighting your biology and start working with it. No restriction, no deprivation—just strategic additions that compound over time. 
Get instant access to all materials immediately, plus join the next live coaching cohort (new rounds start Jan/Apr/Sept).
Join The 30/30 Program Today!

Evidence-Based Resources At Your Fingertips

I believe everyone deserves access to evidence-based tools that actually work. That's why I created these resources—to give you the same strategies I use with private clients, at a fraction of the cost.

🎧 THE OBESITY GUIDE PODCAST 

I've created over 100 episodes breaking down the science of weight management into strategies you can actually use. From hunger hormone secrets to the latest research breakthroughs, get the insider knowledge that's changing lives, from a physician who's lived it herself.

Psst: With 100+ episodes available, I've created an Episode Guide to help you navigate by topic—whether you're looking for medication insights, mindset shifts, or support with nutrition. --> Download the Obesity Guide Podcast Roadmap here <-- to find exactly what you need.

Listen Now

Top 5 Mistakes People Make on a GLP-1 (Mini Digital Course)

Are you on a GLP-1 medication but not getting the results you expected? 

Most people make critical mistakes that sabotage their success. 

This focused course reveals exactly what to avoid and what to do instead. 

Perfect for: 

  • Anyone currently on or considering GLP-1 medications 
  • Those who want to optimize their results 
  • People looking for physician-backed guidance without the guesswork 
Optimize Your GLP-1 Results Today

DR. RENTEA’S POWER PICKS FOR METABOLIC HEALTH (FREE Download)

Cut through the noise with my personally curated list of top recommendations. From books and podcasts to health tracking devices, protein sources, and supplements—I've done the research so you don't have to. With so much conflicting information online, this guide saves you time by highlighting only the tools and resources that truly work for metabolic health and sustainable weight management.

Download Your Free Power Picks Resource Now

🎧 THE OBESITY GUIDE: BEHIND THE CURTAIN 
(Premium Podcast Series) 

Go deeper with the raw, unfiltered conversations normally reserved for my clinical practice.

 

Season 1 contains 16 episodes covering advanced strategies for plateaus, GLP-1 optimization, and long-term success.

 

 

Check it out!

Ready to Stop Fighting Your Biology? Start Here.

🎥 Get Your FREE 3-Day Hunger Hormone Reset Mini Video Series

Finally understand why you're always hungry—and what to do about it. 

If you've ever felt like no matter how hard you try, you're always hungry, you're not broken. You're not failing. And it's definitely not about willpower. It's about your hunger hormones—and they're working against you.

What You'll Discover: 

  • Day 1: Why You're Always Hungry (And What To Do About It) 
  • Learn how ghrelin and insulin control your hunger signals and discover 5 practical strategies to keep them balanced.
  • Day 2: Still Hungry After Eating? Here's Why Explore how stress, sleep, and hormonal fluctuations affect your appetite—and what to do when food isn't the answer. 
  • Day 3: The Biggest Hormone Hijacker Uncover how ultra-processed foods override your natural hunger signals, plus simple food swaps that don't feel like deprivation.

This isn't another 'just try harder' approach. When you understand how your hunger hormones work, you can finally work WITH your body instead of fighting against it. 

By signing up, you'll also receive my weekly newsletter. Unsubscribe anytime.

Take control of your hunger hormones today (FREE 3-Day Video Series)

Stay Connected: Your Science-Backed Support System

 

📧 Weekly Newsletter
Every Monday, I'll let you know about the new episode release for The Obesity Guide (no bombarding your inbox, I promise!) plus any key takeaways and extra resources to help you on your journey.

🎙️ Weekly Podcast
Join me for The Obesity Guide podcast where I break down cutting-edge research, interview experts, and have the honest conversations about weight management you won't hear anywhere else.

📱 TikTok
Quick myth-busting, bite-sized tips, and real talk about what actually works. Perfect for when you need science-backed strategies you can use right now.

📸 Instagram
Get behind-the-scenes insights, client success stories, and deeper educational content that transforms how you think about weight management.

You're not broken. You're not lacking willpower. You just need the right information and support. Let's do this together.


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