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Discover how to reverse prediabetes and type 2 diabetes using your food as medicine

We can show you how to lose weight, gain energy, lower your blood sugar, and get your best A1c quickly, using groundbreaking science.

Our New York Times bestselling book has helped thousands of people transform their health from the inside out.

Discover how to reverse prediabetes and type 2 diabetes using your food as medicine

Mastering Diabetes

We can show you how to lose weight, gain energy, lower your blood sugar, and get your best A1c quickly, using groundbreaking science. Our New York Times bestselling book has helped thousands of people transform their health from the inside out.

Discover how to reverse prediabetes and type 2 diabetes using your food as medicine

We can show you how to lose weight, gain energy, lower your blood sugar, and get your best A1c quickly. Our New York Times bestselling book has helped thousands of people transform their health from the inside out.

Mastering Diabetes has been featured in:

National Public Radio

The New York Times bestselling authors of Mastering Diabetes have also been featured in:

"I have lost 30 pounds and dropped my A1c from 7.8% to 5.8%. My doctor has taken me off of insulin."

This is wild. And more, my sugars are more predictable than ever before. This method has changed my life.

Brian W.

"I just got back from my annual physical and my doctor has marked 'resolved' on my records."

Four years ago when I was diagnosed I thought diabetes was the end of my life. It turns out it was just the beginning of an amazing journey.

Heather B.

"I was diagnosed T2 with an A1c of 14.8%. In 3 months it had come down to 7.3% and now it's down to 6.0%."

I just got my results from my blood test last week. I kinda don't believe it and neither does my doctor.

Lara L.

Is it really possible to reverse prediabetes and type 2 diabetes?

Most people living with prediabetes and type 2 diabetes are unaware that they can actually reverse both conditions completely. When you reverse insulin resistance using the Mastering Diabetes Method, you can begin reducing your oral medication and insulin requirements within weeks.

Most people living with prediabetes and type 2 diabetes who follow our recommendations have been able to completely reverse diabetes, discontinue the use of oral medications and insulin, and drop their A1c to 5.6% or less.

By addressing insulin resistance directly, you'll learn how to stop managing the symptoms of blood sugar fluctuations and instead reverse the cause of unmanageable blood sugar once and for all.

Is it really possible to reverse prediabetes and type 2 diabetes?

Most people living with prediabetes and type 2 diabetes are unaware that they can actually reverse both conditions completely. When you reverse insulin resistance using the Mastering Diabetes Method, you can begin reducing your oral medication and insulin requirements within weeks.

Most people living with prediabetes and type 2 diabetes who follow our recommendations have been able to completely reverse diabetes, discontinue the use of oral medications and insulin, and drop their A1c to 5.6% or less.

By addressing insulin resistance directly, you'll learn how to stop managing the symptoms of blood sugar fluctuations and instead reverse the cause of unmanageable blood sugar once and for all.

How can I get better blood sugar fast?

Following our method not only reduces your blood sugar and A1c, it reduces your heart disease risk and reduces your LDL cholesterol within weeks. Our method increases your insulin sensitivity very quickly, which in turn drops your need for oral medications and insulin in the short- and long-term.

If you are currently taking oral medications for high blood pressure or high cholesterol, the Mastering Diabetes Method is also very likely to lower your blood pressure and cholesterol levels significantly. We recommend working with your doctor to maximize your health at all times.

How can I get better blood sugar fast?

Following our method not only reduces your blood sugar and A1c, it reduces your heart disease risk and reduces your LDL cholesterol within weeks. Our method increases your insulin sensitivity very quickly, which in turn drops your need for oral medications and insulin in the short- and long-term.

If you are currently taking oral medications for high blood pressure or high cholesterol, the Mastering Diabetes Method is also very likely to lower your blood pressure and cholesterol levels significantly. We recommend working with your doctor to maximize your health at all times.

Are you looking to drop your A1c and improve your health naturally?

The Mastering Diabetes Method is backed by almost 100 years of evidence-based science in which you’ll discover how to eat carbohydrate-rich foods in abundance. You’ll discover which foods to maximize, which foods to minimize, and which foods to eliminate that follows a simple green light, yellow light, red light system.

You can find the foods in our program at your local grocery store. All you need is simple cooking equipment and a desire to take full control of your health using your food as medicine!

Are you looking to drop your A1c and improve your health naturally?

The Mastering Diabetes Method is backed by almost 100 years of evidence-based science in which you’ll discover how to eat carbohydrate-rich foods in abundance. You’ll discover which foods to maximize, which foods to minimize, and which foods to eliminate that follows a simple green light, yellow light, red light system.

You can find the foods in our program at your local grocery store. All you need is simple cooking equipment and a desire to take full control of your health using your food as medicine!

Is the Mastering Diabetes Method right for you?

The Mastering Diabetes Method is perfect for you if any of the following are true: 

  • You are living with prediabetes or type 2 diabetes
  • Your A1c value is higher than you want
  • You have been told that you are insulin resistant
  • Your fasting blood sugar is high 
  • Your post-meal blood sugar is high
  • You struggle to lose weight and/or have tried losing weight in the past unsuccessfully
  • You struggle with low energy
  • You have high total cholesterol, LDL cholesterol, triglycerides, or blood pressure
  • You are living with fatty liver disease
  • You want to reduce or eliminate your use of oral medication and/or insulin using natural methods
  • You have an open mind about changing the foods you eat and modifying your lifestyle

The Mastering Diabetes Method is not for you if...

The Mastering Diabetes Method is not for you if you prefer to take a pill to lower your blood sugar, or if you're not willing to put in the effort to change your lifestyle. Our method is not for you if any of the following are true:

  • You are not living with prediabetes or type 2 diabetes
  • Your fasting blood sugar, post-meal blood sugar, and A1c are in the normal range at all times
  • You would prefer to lower your blood sugar, cholesterol, and/or blood pressure using medication rather than food
  • You are not interested in changing the foods you eat to improve your blood sugar control and drop your A1c
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Meet Cyrus Khambatta, PhD, Nutritional Biochemistry

Cyrus Khambatta, PhD 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.


Cyrus has been living with type 1 diabetes since 2002, earned a Bachelor of Science in Mechanical Engineering from Stanford University in 2003, worked as an aerospace engineer at the NASA Ames Research Center, then earned a PhD in Nutritional Biochemistry from the University of California at Berkeley in 2012. 

Robby-Barbaro-Square

Meet 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, his HbA1c value has never exceeded 6.4%, and his blood glucose has been stable and easy to manage.


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.

Join 55,000+ people

Reversing insulin resistance, prediabetes, and type 2 diabetes while reducing their medication 

You have the ability to reverse prediabetes and type 2 diabetes. We can help you get there 100% naturally.

We can show you how to lose weight, gain energy, lower your blood sugar, and get your best A1c quickly, using a simple system that has worked for 55,000+ people.

You have the ability to reverse prediabetes and type 2 diabetes using your food as medicine. We can help you get there 100% naturally.

Mastering Diabetes

We can show you how to lose weight, gain energy, lower your blood sugar, and get your best A1c quickly, using a simple system that has worked for 55,000+ people.

You have the ability to reverse prediabetes and type 2 diabetes using your food as medicine. We can help you get there 100% naturally.

We can show you how to lose weight, gain energy, lower your blood sugar, and get your best A1c quickly, using a simple system that has worked for 55,000+ people.

Get Started For FREE Today