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These Doctors Were Wrong About Fasting... and Why I Strongly Disagree

2025-10-16 People & Blogs
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Thomas DeLauer
Thomas DeLauer
4.0m subscribers

Reframing Fasting: Maintaining Muscle Mass Despite Expert Skepticism

Discover why prominent health figures are reconsidering regular fasting protocols and learn the precise training and nutritional adjustments necessary to successfully preserve lean muscle mass while continuing your fasting regimen.

Short Summary

  • Decouple fasting from forced immediate protein consumption post-workout using modern protein synthesis data.
  • Prioritize resistance training over fasted cardio to optimize fat oxidation signaling and guard muscle tissue.
  • Understand the distinction between risks associated with extended fasts versus shorter, strategic fasting windows.

This discussion addresses the recent shift in opinion from experts like Dr. Peter Attia and Dr. Rhonda Patrick regarding metabolic stability and muscle loss during fasting. The core goal is to provide actionable countermeasures, rooted in current research, to mitigate these risks.

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Description

Use Code THOMAS for up to 31% off & $25 worth of free gifts from Manukora: http://manukora.com/thomas20 This video does contain a paid partnership with a brand that helps to support this channel. It is because of brands like this that we are able to provide the content that we do for free. Click HERE to Subscribe: https://www.youtube.com/c/ThomasDeLauerOfficial?sub_confirmation=1 Please check out the new Shorts channel, DeLauer Clips and Workouts, here: https://www.youtube.com/channel/UCQPQImPsw74KhO0Zy2-leyA/videos Please Subscribe to my Email Newsletter Here: https://www.thomasdelauer.com/life-optimization-tactics/ Follow More of My Daily Life on Instagram: http://www.Instagram.com/ThomasDeLauer References https://www.cell.com/cell-reports-medicine/pdfExtended/S2666-3791(23)00540-2 https://journals.physiology.org/doi/full/10.1152/japplphysiol.00704.2006 Timestamps ⏱ 0:00 - Intro 0:57 - Dr. Peter Attia & Dr. Rhonda Patrick's Current Views on Fasting 2:42 - Why I Disagree 3:08 - Up to 31% off & $25 Worth of Free Gifts from Manukora 4:18 - Why I Disagree 5:34 - The Real Issue 7:40 - Where I Went Wrong 8:22 - Resistance Training on a Fasting Day 9:30 - Should You Stop Fasting?

Top Comments (10)

@MegaSamTheMan77 2025-10-16

I feel significantly better when I fast regularly.

183 22 replies
@oscarb780 2025-10-16

Still fasting, 8 years in and it feels great!

70 2 replies
@Aspen-xo7oc 2025-10-16

I still fast. I feel better after a fast.

59
@MrBuzzBill 2025-10-17

Fasting saved my life. I was once diabetic and am now cured. Sore joints. Lethargy. Brain fog. All are gone! Im down 55 pounds and sleep like a baby. My wife is shocked that I no longer snore. I do high intensity intermittent training by speed walking and / or hill climbing. Im careful to get enough protein and do resistance training twice a week. I went hunting with my son a couple weeks ago and we were both amazed that I never got tired climbing through rough terrain for many hours. Since I was significantly fat, I feel like my body was burning mostly fat. Since I had upwards of 200,000 calories of subcutaneous and visceral fat on my body, I don't think my body is stupid enough to burn excessive muscle. It doesn't make sense. After my last 7 day fast, I decided to only do it twice a year at most because of the strees it has on my body. But, I am a true believer in fasting.

38
@kathleenreyes4345 2025-10-16

I’ve done a 3 day fast, felt amazing and helped to get my blood sugar levels under control! I do IF every day!!

37 1 replies
@bookzdotmedia 2025-10-16

14 hour daily fasting saved my life!

36 10 replies
@muratisik6956 2025-10-17

Thank you for this! Peter and Rhonda don’t need to fast: they are very fit and active, eat super healthy, they can afford to be lazy towards fasting. But an average person doesn’t live like them. A regular person struggles with weight, staying active and eating healthy. I fast for fat loss and autophagy.

17
@K.awan_1 2025-10-17

100 experts and 100 different opinions. I am actually getting tired

16
@AuntyHelen-111 2025-10-16

As a female in her 40s in the military, I found conventional wisdom stacks the weight on. I do best following keto OMAD, and exercise fasted. I seek to stay skinny strong, going to try this advice, try a couple of 36 hour fasts on resistance training days.

12
@ThomasDeLauerOfficial 2025-10-16

I put together a meal plan for insulin resistance using Whole Foods, here it is for free: http://www.thomasdelauer.com/eatrealfood - The best way to adhere to something is just have a plan. This is a thank you for joining my newsletter and subscribing

11 2 replies

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