Fasting Q&A with Dr Jason Fung: New 5-Day Fasting Reset, Bitter Greens, Body Set Weight, Kidney Damage, and More
The Fasting Method Podcast
Megan Ramos Nutrition Inc
4.8 • 595 Ratings
🗓️ 19 August 2025
⏱️ 38 minutes
🧾️ Download transcript
Summary
Episode #219
In this Fasting Q&A episode, hosted by Coach Lisa Chance, Dr. Jason Fung answers questions from the TFM Community:
- I realize the relationship between bitters, incretins, and autophagy is more complex than a direct cause-and-effect relationship. The incretin response doesn't directly "promote" autophagy - it primarily regulates blood sugar and satiety. Autophagy is mainly triggered by nutrient scarcity and low insulin levels, not by bitter compounds themselves. Can you weigh-in on using bitter greens during this reset? [16:07]
- I have had some success lowering weight a couple times using fasting and time restricted eating but the weight creeps back up after a while even with doing TRE. What's nice is that I can get it to go back down again with discipline. I'm wondering what scientific evidence exists that your body set weight can successfully be reset for the long term as mine holds for a while but then wants to creep up and if there's a foolproof method to resetting your body set weight? [19:26]
- Your kidney patients who are T2D and close to needing dialysis, but are skinny, I'm assuming they need to fast for about a year to reverse the kidney damage, but how do they do it with so little fat mass? [26:56]
- I know that vitamin D is fat soluble and best taken with a meal. I've also heard that all supplements are better absorbed when taken with a meal. Is this true? What timeframe is considered "with a meal"? Is it before, during or after the meal? Is vitamin D a stimulant and can disrupt sleep so best taken in the morning? [30:32]
- How do you rate the risk of new gallstones formation if a patient already has one or more when it comes to fasting protocols? [33:46]
Links:
Dr. Fung's YouTube video, 5 Ways to Naturally Boost the Ozempic Effect
https://www.youtube.com/watch?v=le3Ifc7D5Vk&t=2s
Gallstones discussed on TFM Podcast #171
Please note that you need to be a member of the TFM Community to submit questions to the Q&A webinars with Dr. Fung but you can submit questions to our regular Q&A episodes here: https://bit.ly/TFMPodcastQs
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Summary Timestamps
00:00 Intro
01:49 Introducing TFM's new 5-Day Fasting Reset
16:07 Bitter greens
19:26 Body set weight
26:56 Reversing kidney disease possible?
30:32 Timing of taking fat-soluble vitamins
30:32 Gallstones
Disclaimer
This podcast is for educational purposes only and is not a substitute for professional care by a doctor or other qualified medical professional. You should always speak with your physician or other healthcare professional before doing any fasting, changing your diet, taking or adjusting any medication or supplements, or adopting any treatment for a health problem. The use of any other products or services purchased by you as a result of this podcast does not create a healthcare provider-patient relationship between you and any of the experts affiliated with this podcast. Information and statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease.
Transcript
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| 0:00.0 | About a year and a bit ago, I had a lot of Achilles tendonitis. And I did all the usual stuff, right? So I looked in the books and I said, okay, well, you do physiotherapy, you do ultrasound, you do stretching. So I did all that. And it was just terrible. So I couldn't really run. And it was like a year. He did it. Now, I normally do sort of shorter fast 16, 24. I did some two day fast and so on. |
| 0:24.4 | But a friend of mine, he had tennis elbow and he did a longer fast and it really helped him a lot. |
| 0:30.0 | So I thought, okay, well, maybe I should try it too. So I did a five day fast. And really, |
| 0:36.2 | the tendinitis was like 70% better. |
| 0:39.5 | It was just stunning to me what a difference it made. |
| 0:49.5 | Hello, everyone. |
| 0:51.2 | Welcome to our monthly Q&A with our very old Dr. Fung, where he's going to tackle |
| 0:56.7 | questions submitted by our Tfm community members. And hello to our podcast listeners who |
| 1:03.6 | will be able to listen to this Q&A with Dr. Fung a few weeks after our community members. |
| 1:10.0 | So hi Dr. Fung, how are you doing today? I'm good. How are you? |
| 1:13.4 | I'm so excited. We're doing this five-day reset, which is a new reset protocol in our T.F |
| 1:20.6 | and community this week. And so many people are jumping in and enjoying it, learning about ourselves, about it. But can you expand a little bit on it |
| 1:30.8 | and tell us a little bit more about it? Yeah, absolutely. So this is one of the things that we've done a lot, |
| 1:36.3 | not in the community, but in coaching and private conversations, which is doing a longer fast, |
| 1:42.6 | which is this five-day fast. |
| 1:45.1 | And it's not necessarily a full fast. |
| 1:48.0 | And the reason we're doing it is we're trying to create a bit more structure to the community |
| 1:52.9 | and try and get people on the same sort of timelines because it's important to have a supportive community and doing things altogether |
| 2:03.5 | is generally easier, whether it's running or whether it's, you know, knitting or whether |
| 2:08.2 | it's anything really is better. |
| 2:10.0 | So fasting is really no different. |
| 2:11.7 | So we're doing this five-day reset challenge. |
... |
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