After 25 Years with Diabetes, Karen Found a Powerful Reset at the Mastering Diabetes Retreat

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Article written and reviewed by Robby Barbaro, MPH
Published July 20, 2026

Meet Karen. She’s been living with diabetes for more than 25 years.

When she was first diagnosed, the guidance she received was minimal. She was handed a glucose meter, told to monitor her blood sugar, check her A1c periodically, and sent home. That was it.

No one talked to her about nutrition. No one explained insulin resistance. And no one suggested that improving her lifestyle could dramatically change the course of her disease.

Like many people, Karen assumed diabetes was something she would simply manage for the rest of her life.

As the years passed, her medications continued increasing. She knew there had to be a better way.

Discovering That Diabetes Could Be Reversed

Eventually, Karen began searching for answers on her own.

She discovered Mastering Diabetes and, for the first time, heard something no healthcare provider had ever told her: Diabetes could be reversed.

That idea completely changed her perspective.

She embraced the Mastering Diabetes lifestyle, improved her blood sugar dramatically, and proved to herself that meaningful change was possible.

Over time, her A1c dropped from 12 into the 6 range, and she even maintained readings between 5.0 and 5.2 for an entire year.

She was convinced the program worked. So why attend the retreat?

Why Karen Decided to Attend the Retreat

Karen didn't come to the retreat because she was starting over. She came because she wanted a reset.

After following the Mastering Diabetes lifestyle for several years, she felt she understood the basics. She knew the food. She understood the principles. She believed she had developed solid habits.

But like many people, she also recognized that small habits had slowly crept back into her routine. She wanted to sharpen her focus. What she didn't expect was how much she would still learn.

"I thought I knew everything," Karen admits. "Instead, I realized I just needed some tweaking."

That "tweaking" ended up becoming one of the most valuable parts of the entire retreat.

Small Changes That Made a Big Difference

One of Karen's biggest breakthroughs came during the movement sessions.

She had been faithfully taking short 10-minute walks after meals and assumed that was enough.

During the retreat, she learned she could do more: Longer walks. More resistance training. A little more intensity. Not because she was doing anything wrong, but because her body was ready for the next step.

She also made another surprising discovery: She wasn't eating enough.

For someone who had spent years trying to lose weight, hearing she needed more calories felt completely backward.

But after eating the abundant meals served throughout the retreat, she quickly understood why.

The larger, fiber-rich meals kept her satisfied for hours, eliminating the constant urge to snack between meals. It was a lesson she plans to take home immediately.

Karen's Health Transformation

Karen's long-term journey had already transformed her health before arriving at the retreat, but one of the most exciting changes happened during the retreat itself.

Header

Before

After

A1c (%)

12.0

5.0

Blood Pressure Medication

Full Dose

Reduced by 50% during the retreat

Energy

Inconsistent

Stronger, more energized

Confidence

Unsure how to keep progressing

Clear plan for continued improvement

After just a few days, her physician instructed her to cut her blood pressure medication in half because her readings had improved so much.

One morning, she recorded excellent blood pressure before even taking her medication.

For Karen, that was remarkable.

She had always assumed high blood pressure, like diabetes, was something she would have forever. Now she sees a different future.

More Than Education

Karen expected to learn. She didn't expect to be inspired.

Throughout the retreat, she connected with people facing similar challenges, each working toward better health through the same principles.

For years, she had often felt like she was doing this alone. At the retreat, that feeling disappeared.

The conversations during meals. The walks together. The shared victories. The friendships. Every interaction reminded her she wasn't the only person choosing this path.

That sense of community became one of her favorite parts of the experience.

The Coaching Team Made the Difference

Karen speaks passionately about the coaching team.

She says every coach was fully invested in helping participants succeed, not just during the retreat but long afterward.

One coach even became a close friend outside the program. They now meet regularly for lunch.

For Karen, that level of genuine care was something she had never experienced in traditional healthcare.

She never felt like just another patient. She felt supported.

Food That Changed Her Perspective

Karen expected healthy food. She didn't expect it to be so abundant.

Breakfast kept her full until lunch. Lunch carried her through the afternoon. Dinner satisfied her until the next morning.

Instead of constantly thinking about snacks, she discovered what true satiety feels like when meals are built around fiber-rich whole foods.

And then there were the mangoes. "They tasted like candy," she laughed.

The retreat reminded her that eating this way isn't about deprivation. It's about abundance.

Exercise That Built Confidence

Before arriving, Karen admits she was nervous about the fitness sessions.

She worried she would be the least fit person there. She worried she wouldn't be able to keep up. Instead, she found exactly the opposite.

Every workout was approachable. The coaches met participants where they were. She left feeling stronger, more capable, and excited to continue exercising at home.

Before she even returned home, she had already purchased resistance bands so she could continue what she learned during the retreat.

That confidence may have been one of the greatest gifts she received.

Learning More Than She Expected

Even after years of following Mastering Diabetes, Karen was surprised by how much new information she learned.

The lectures covered far more than diabetes.

She learned about environmental toxins, plastics, optimizing movement, meal timing, and practical strategies for improving long-term health.

She arrived thinking she already knew most of the material. She left realizing there was always another level of growth. And that excited her.

What Karen Wants Others to Know

Karen believes the retreat is valuable whether you're brand new to Mastering Diabetes or have been following the lifestyle for years.

If you're just getting started, it provides an incredible foundation.

If you've been following the program for a while, it's the perfect opportunity to reset your habits, learn new strategies, and reconnect with your purpose.

Most importantly, you'll discover that you're not alone.

You'll leave with practical tools, lifelong friendships, renewed motivation, and a clear roadmap for taking your health to the next level.

Ready to Experience the Mastering Diabetes Retreat?

Whether you're looking to lower your blood sugar, improve insulin sensitivity, regain your motivation, or simply immerse yourself in an environment built around health, Karen's story shows just how transformative a few days can be.

Join us at the next Mastering Diabetes Retreat and experience hands-on coaching, world-class education, delicious whole-food, plant-based meals, daily movement, and a supportive community that will help you build momentum long after you return home.

Reserve Your Spot Today!

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About the author 

Robby Barbaro, MPH

Robby Barbaro, MPH is a New York Times bestselling co-author of Mastering Diabetes: The Revolutionary Method to Reverse Insulin Resistance Permanently in Type 1, Type 1.5, Type 2, Prediabetes, and Gestational Diabetes.

Robby was diagnosed with type 1 diabetes at the age of 12 and has been living this lifestyle since 2006. In that time, while eating pounds of fruit every day, his HbA1c has been stable with a current A1c of 5.3%, TIR of 92%, and average total daily insulin use of 30 units.

Robby graduated from the University of Florida and is the cofounder of Mastering Diabetes and Amla Green. He worked at Forks Over Knives for six years before turning his attention in 2016 to coaching people with diabetes full time.

He is the co-host of the annual Mastering Diabetes Online Summit, a featured speaker at VegFest LA, and has been featured on The Doctors, Forks Over Knives, Vice, Thrive Magazine, Diet Fiction, and the wildly popular podcasts the Rich Roll Podcast, Plant Proof, MindBodyGreen, and Nutrition Rounds.

Robby enjoys exercising every day, spending time with friends, and sharing his lifestyle on Facebook, Twitter and Instagram.