How Beth Lowered Her A1C from 6.4 to 5.6 and Reversed Prediabetes

Article written and reviewed by Robby Barbaro, MPH
Published July 8, 2026

Meet Beth. She never expected a routine wellness visit to change the course of her health.

She felt healthy. She exercised almost every day, maintained a healthy weight, and had spent years trying to eat well. In fact, after being diagnosed with breast cancer in 2021, she became even more intentional about improving her diet. She rarely ate red meat and believed she was making the best choices possible for her long-term health.

Then, during a routine Medicare wellness exam, her doctor ordered a hemoglobin A1c test. The result came back at 6.4.

It was the first time Beth had ever had her A1c measured, and she was stunned. Her fasting glucose had always looked normal on routine blood work, so diabetes had never been on her radar.

She knew she wanted to act before the problem progressed any further.

When You Think You're Eating Healthy

Beth's diagnosis came with an unexpected twist.

Her healthcare team told her she didn't fit the typical profile of someone developing diabetes. She exercised consistently, maintained a healthy lifestyle, and already ate far better than the average person.

That made the diagnosis even more confusing.

After her breast cancer treatment, she had already made significant dietary changes and spent countless hours researching nutrition. She believed she had figured it out.

But something was still missing.

As she continued searching for answers, she came across Mastering Diabetes, ordered the book, and quickly realized there was an entirely different way to think about blood sugar and insulin resistance.

When she learned about the Mastering Diabetes Coaching Program, she decided she wanted guidance instead of trying to figure everything out alone.

She signed up immediately. "It was the best thing I ever did," she says.

Building a Lifestyle That Actually Worked

One of the biggest surprises for Beth was realizing that many of the foods she considered healthy were still working against her.

Because she also has celiac disease, she relied heavily on gluten-free products. Rice Chex. Gluten-free toast. Gluten-free crackers. She assumed they were healthy simply because they were gluten free. Working with her coach completely changed that perspective.

She learned that even gluten-free processed foods can cause significant blood sugar spikes and that replacing them with whole, fiber-rich foods made an enormous difference.

More importantly, she finally understood why.

For Beth, this wasn't simply learning what to eat. It was learning how food actually affects insulin sensitivity and blood sugar.

Learning How to Use Her Data

Another turning point was learning how to interpret her glucose readings.

Her endocrinologist recommended wearing a continuous glucose monitor, and with her coach's guidance, Beth learned how to use the information to make better decisions throughout the day.

Instead of simply seeing numbers on a screen, she began understanding patterns.

She could see which meals kept her blood sugar stable. She learned what normal looked like. And she finally understood how her food choices affected her body in real time.

That education gave her confidence instead of uncertainty.

Beth’s Before and After Results

As Beth consistently applied what she learned, her results steadily improved.

Header

Before

After

A1c (%)

6.4

5.6

Beth lowered her A1c from 6.4 to 5.6, moving out of the prediabetes range before the condition had a chance to progress further.

Just as importantly, she completely changed the way she approaches food.

Learning What Real Satisfaction Feels Like

One of the biggest mindset shifts Beth experienced had nothing to do with lab work. It had to do with hunger.

When she first transitioned to the program, she often felt like she wasn't completely full.

But over time, she realized she wasn't actually hungry. She was simply adjusting to a different kind of fullness.

Instead of feeling stuffed after eating processed carbohydrates like crackers and toast, she began experiencing the lasting satisfaction that comes from whole plant foods.

That distinction changed everything. Today, she says she never feels overly full anymore. She simply feels satisfied, and she prefers that feeling.

Better Energy Without the Afternoon Crash

Before changing the way she ate, Beth experienced noticeable fluctuations in her energy throughout the day.

While she remained active, there were times when her energy would suddenly drop and she found herself reaching for snacks.

Now, things feel much more stable.

She still exercises almost every day, but the combination of movement and whole-food nutrition has given her sustained energy instead of constant highs and lows.

When she wants a snack, she no longer reaches for gluten-free crackers. She reaches for carrots. Or berries.

The cravings themselves have changed.

Navigating Social Situations With Confidence

Like many people following this lifestyle, Beth admits that eating out can sometimes be challenging.

Friends occasionally assume she's being overly picky when she asks for meals without added oil or requests simple modifications.

But she no longer worries about what other people think. She knows why she's making those choices.

For Beth, those small decisions represent something much bigger. They are daily investments in her future health.

Why Coaching Made the Difference

Beth believes she could not have achieved the same results through books alone.

The education was invaluable. But having a coach transformed that knowledge into practical action.

She learned which foods to replace. How to interpret her continuous glucose monitor. How to structure meals. How to identify habits that were quietly working against her. Instead of guessing, she had guidance every step of the way.

That support made the process far less overwhelming and much more sustainable.

Getting Ahead of Diabetes Before It Progressed

One of the things Beth is most grateful for is that she discovered the program early.

Rather than waiting until her diabetes progressed further, she addressed insulin resistance while she still had the opportunity to dramatically change the trajectory of her health.

She often tells friends, family members, and even people she meets at the gym about Mastering Diabetes.

Whenever someone mentions elevated blood sugar or a rising A1c, she shares her experience and encourages them not to wait.

Her advice is simple: Take the first step now. Because every step you delay is another step you'll eventually have to retrace.

What Beth Wants Others to Know

Looking back, Beth feels the program changed nearly every part of her life.

She feels physically stronger. She exercises more comfortably. Her energy is more consistent. Her moods are more stable. And she no longer worries that diabetes is controlling her future.

Most importantly, she now understands that eating healthy and eating in a way that improves insulin sensitivity are not always the same thing.

That knowledge changed everything.

Ready to See Results Beth?

If you've recently learned your A1c is elevated, believe you're already eating healthy but aren't seeing the results you want, or want to improve your blood sugar before diabetes progresses, Beth's story shows that meaningful change is possible.

Book a free discovery call with one of our advisors and learn how to begin your own transformation.

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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.