#27 The Benefits of Fasting

Dr. Jason Fung of the IDM Program

Nephrologist and world leading expert on intermittent fasting

My guest, Dr. Jason Fung is a passionate advocate for reclaiming our health through low-carb nutrition and intermittent fasting. As a Nephrologist, he recognized his diabetic patients on dialysis uniformly declined into worsening health. He knew something had to change. That is when he went against the prevailing paradigm and starting using low-carb nutrition and intermittent fasting as primary therapy for his patients. And he hasn’t looked back.

Now known as “The King of Fasting” he maintains a prolific blog at IDMProgram.com, and he has published
The Obesity Code: Unlocking the Secrets of Weight Loss, and The Complete Guide to Fasting, and we eagerly await his new book,
The Diabetes Code: Prevent and Reverse Type 2 Diabetes Naturally.

Although the benefits of fasting to treat diabetes are immense, they do not stop there. Fasting also impacts our nutrient sensors, and by doing so, may help us prevent or treat cancer, and improve our longevity. The science behind this is fascinating and continues to grow every day.

Key Takeaways:


[6:06] Dr. Fung recognized the failure in treating Type 2 Diabetes with insulin.

[15:38] Intermittent Fasting is balancing your feeding times with your fasting times.

[31:14] The science of how fasting affects nutrient sensors in the body.

[41:06] Turning down the growth factors of cancer.

[49:43] Calling out the connection between Big Pharma and the policymakers in the medical community.


Mentioned in This Episode:

Dr. Bret Scher

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Dr. Scher on Facebook

Your Best Health Ever! The Cardiologist’s Surprisingly Simple Guide to What Really Works,
by Bret Scher, M.D., FACC

IDM Program

Books by Dr. Jason Fung

Diet Doctor

3 thoughts on “The Benefits of Fasting

Dr. Jason Fung of the IDM Program”

  1. Dear doctor Jason Fung,

    I am doing  intermittent fasting for 5 weeks now. What I noticed is that my fasting glucose level sometimes went up to 6.5 mmol/L to my great surprise?? I am not a diabetic person, my fasting glucose used to be 5.4 mmol/L. I lost 8 KG over the 5 week period. My weight is now 92 KG and my weight target is 80 KG. I follow the keto diet with moderate quantities of protein and fat.  The carb that I eat is mainly from nuts ( moderate intake) and vegetables.  Also I do one meal a day, my eating window is 2 or 3 hours a day. I drink mainly water, coffee and thea during the day. not sugard ofcourse.

    My question: is it normal to have a higher fasting glucose level with IM fasting?


    Kind Regards

    Saïd Akdim

    1. Hi Said. While I cannot comment specifically on your situation, I can say that sometimes fasting blood sugars go up with the so-called “Dawn Effect.” Sometimes I will ask a client to measure it before and after meals rather than first thing in the morning for comparison sake. 

  2. Hi Dr Fung, I started reading your book and changed my eating habits on March 5 2021. At that time, my A1C was10.7. In June, I tested again and I was at 8.4. I completely cut out sugar, got off insulin and stopped taking glipizide. I have lost almost 40 lbs. I still take metformin,1000 mg 2x per day. My blood sugar is consistently high, 245-300 even though I am watching my carb intake and fasting for breakfast and lunch. My dr says I am insulin resistant , I know about the dawn phonomen, but is this high blood sugar normal?
    What should I do?

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Bret Scher, MD FACC

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