16: Is Keto Mandatory, Extended Fast Frequency, Blood Sugar Spike, Benefits Of Shorter Fasts, Hypoglycemia, Chinese Medicine

16: Is Keto Mandatory, Extended Fast Frequency, Blood Sugar Spike, Benefits Of Shorter Fasts, Hypoglycemia, Chinese Medicine

Veteran health podcaster, blogger, international speaker, and bestselling author Jimmy Moore from “Livin’ La Vida Low-Carb” teams up with Toronto, Ontario Canada-based nephrologist Dr. Jason Fung from IntensiveDietaryManagement.com and Dr. Fung’s Clinical Director at his Intensive Dietary Management Program clinic Megan Ramos on this podcast dedicated to answering YOUR questions about intermittent, alternate day, and extended fasting. Jimmy and Dr. Fung are the coauthors of the 2016 international bestseller The Complete Guide to Fasting: Heal Your Body Through Intermittent, Alternate-Day, and Extended Fasting and, along with Megan, are happy to provide this podcast as an additional resource for anyone curious about going on a fast to improve their health. We love hearing from our listeners with new questions–send an email to Jimmy at livinlowcarbman@charter.net. And if you’re not already subscribed to the podcast on iTunes, then you can do that and leave a review HERE. Listen in today as Jimmy and Megan are joined by Featured Fasting Patient Hayley Porteous and talk all about fasting in Episode 16.

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SPECIAL GUEST: Hayley Porteous

My name is Hayley and I am a Menopausal Momma to two kids (11 and 14). I am a Mental health clinician and am one course short of finishing my Masters of Health Administration. I live in Victoria which is on Vancouver Island in British Columbia. Like most people, I have tried everything to “stay healthy” and lose weight. But nothing really worked for long. The scientific evidence that Dr Jason Fung presented in the Obesity Code really made sense to me and I began the IDM program at the end of November 2016. I feel like I have found the answer I was looking for and my life will never be the same!

KEY QUOTE: “I felt so good after trying low-carb high-fat and fasting that I never wanted to go back.” – Hayley Porteous

Here’s what Jimmy, Megan, and Hayley talked about in Episode 16:

HOT TOPIC: Is it necessary to go ketogenic prior to fasting? Or can you eat a high-carb diet and still fast?

1. How often can someone do an extended fast? How do you prevent gaining back all the weight loss during an extended fast?

Hey Jimmy and Megan,

Fasting has totally changed my life, so thank you for sharing on this podcast. I have a few questions for you that I would love to hear the answers to. How often can you engage in extended fasts of five or more days? And how can I be sure that I don’t regain all the weight I lose while on an extended fast?

Thanks for your help,

KEY QUOTE: “In our clinic we work on fasting first and diet second. Fasting helps regulate hunger hormones then you make better food choices.” – Megan Ramos


2. Why did my fasting blood glucose spike on the day after an alternate day fast? Does eating this Mercola-styled meal actually enhance your fasting?

Hey guys,

I am really enjoying Fasting Talk. I love and appreciate Dr. Fung’s ability to relate info in a way that anyone can understand. And, of course, I have listened to you, Jimmy, for a long time. I am loving Megan Ramos and look forward to hearing more from her on upcoming episodes. My question for you guys is this: I practice alternate day fasting and I take my blood sugar reading the morning after a fasting day. Much to my surprise, my last reading jumped 25 points! I have read that sometimes this happens when hormones such as cortisol, glucagon, and epinephrine are released causing the liver to release glucose. Incidentally, I did eat a small meal of 3 ounces of ham and 8 ounces green beans about 3-4 before bed, so possibly that is the culprit in my higher reading. Dr. Joe Marcela was the one who recommended eating a meal consisting of 500 calories or less with 20-30g protein and 8 ounces of green vegetable to enhance my fasting so I thought I’d give it a try.

Thanks for helping me figure this out,




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3. What would be the benefits of fasting for only two days when it seems the most results coming after that?

Hey Jimmy and Megan,

Thanks for the awesomely informative podcast! I’m pretty familiar with keto, but I’m absolutely clueless about fasting. I have a question for you guys to address today about fasting. Several things seem to spike up during the first few days of fasting before going down again. Doesn’t this mean that doing a two-day fast means you are only getting the worst part of the fasting experience? Don’t people who do this short of a fast deny themselves of seeing the ultimate benefits of seeing these things coming back down again and feeling good on the other side?

I appreciate your insights,



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4. Why did I experience hypoglycemia in Day 2 of an extended fast? What can I do to prevent this from happening again?

Hi guys,

I’ve read The Complete Guide to Fasting and have been loving the Fasting Talk podcast. As a science teacher, I really appreciate how you present the information. I initiated what I wanted to be a four-day fast and maybe longer recently. I made it to the 32-hour mark before experiencing signs of hypoglycemia. I was shaky, dizzy, faint, and very weak despite my heart rate at around 100 bpm. When I checked my blood sugar, it was down to 33. Because I didn’t feel safe to drive at the moment, I decided to drink 8 ounces of pomegranate juice since that was the only thing I could find to bring my blood sugar back up. I assume it improved because the symptoms decreased a bit and I made it to work safely. I’m generally healthy except for elevated cholesterol and a bit of excess weight and I’m hoping these things will be fixed by fasting and keto. Any thoughts on what happened here and should I be concerned? If I try to do an extended fast again, do you have any tips to prevent this the next time?

Thanks for your help!



KEY QUOTE: “Fasting is a great way to kick start ketosis and you start feeling the therapeutic effect of ketones within about three days.” – Jimmy Moore

5. Can I use Chinese medicine or take various supplements during a fast?

Hey guys,

Is it okay to use Chinese medicine or supplements such as glutamine or effervescent tablets during my fasting period?

Thank you for your help,



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Jimmy Moore from “Livin’ La Vida Low-Carb”
Dr. Jason Fung from Intensive Dietary Management
Megan Ramos from Intensive Dietary Management
The Complete Guide to Fasting: Heal Your Body Through Intermittent, Alternate-Day, and Extended Fasting
– Get the full audiobook read by Jimmy on Audible
Fung Shweigh Facebook page

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