Dr. Jason Fung: The Best Fasting Method for Visceral Fat and Insulin Resistance has Been Discovered



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Timestamps ⏱

0:00 – Intro
0:22 – The 4 Types of Fasting
3:35 – Why Day Two of a Fast Feels Easier Than Day One
5:32 – Why Are You Hungry With 300,000 Calories in Your Fat Stores?
6:42 – What Shifts After 16 Hours of Fasting?
7:54 – Free Variety Pack of LMNT Electrolytes
8:38 – The Stages of Fasting (Glycogen, Gluconeogenesis, Fat Burning)
14:48 – The Hardest Point of a Fast & the Transition Zone
16:38 – Thomas’s Mini-Refeed Experiment
18:33 – Metabolic Flexibility & Fat Adaptation Gene Changes
21:42 – Can You Lose Metabolic Flexibility the Other Way?
23:11 – Speed of Absorption Changes Everything (Nicotine, Oats, Apples)
27:24 – The 4th Type: Fasting Mimicking Diet
28:43 – Fasting, Cancer, Inflammation & Autoimmunity
30:51 – How Longer Fasts Fixed Jason Fung’s Achilles Tendonitis
35:07 – Fasting Mimicking Mechanisms (CRP, Insulin, IGF-1)
39:39 – Hormesis: Why You Can Overfast Just Like You Can Overtrain
41:20 – How You Break a Fast Matters
42:56 – Homeostatic vs. Hedonic Hunger During Longer Fasts
46:04 – Sardine Fasting & Getting People Into Fasting
47:26 – The 3 Types of Hunger (Homeostatic, Hedonic, Conditioned)
51:11 – Hormones Drive Weight, Not Calories (GLP-1, Insulin, Cortisol)
55:06 – Hedonic Hunger & Ultra-Processed Food Addiction
59:35 – Addiction, Abstinence & Low-Dose Naltrexone for Obesity
1:02:09 – The Calorie Paradigm Is Missing the Point
1:06:24 – Calories Are a Signal, Not THE Signal
1:08:07 – Perimenopause, Estrogen & Why Weight Gain Isn’t a Choice
1:12:00 – The 3 Whys: Why the Titanic Really Sank
1:15:08 – Conditioned Hunger & Pavlov’s Dogs
1:19:58 – Move to Japan, Lose the Weight
1:22:44 – Calorie Bullying & the Shame Problem
1:27:27 – Why Alcoholics Anonymous Has No “Count Your Drinks” Step
1:30:48 – Practical Tips for Homeostatic Hunger
1:34:08 – Food Order Hack: Meat & Veggies Before Carbs
1:36:18 – Meal Timing & Early Time-Restricted Feeding
1:37:38 – Resistant Starch (Cool & Reheat Your Rice)
1:38:50 – Vinegar, Fermented Foods & Salivary Amylase
1:40:02 – Walking After a Meal Blunts Glucose & Insulin
1:42:25 – Traditional Diets Already Knew All of This
1:45:32 – Protein Leverage Hypothesis: Is More Protein Always Better?
1:47:05 – mTOR: Growth Signaling, Cancer & Rapamycin
1:50:34 – Maybe It’s Micronutrients, Not Macros
1:52:10 – Food Synergy: Why Whole Foods Beat Multivitamins
1:55:38 – The Breast Milk Fiasco & Thinking We’re Smarter Than Nature
1:58:26 – The Lindy Effect: Why Ancient Advice Survives
2:01:57 – Butter, Coconut Oil & Optimization Exhaustion
2:03:21 – Jason Fung’s 3 Golden Rules of Weight Loss
2:07:02 – Purpose, Gratitude & What the Happiest People Have in Common
2:08:43 – Religion, Fasting & the Common Denominators of Health
2:10:43 – Where to Find More of Dr. Fung & The Hunger Code

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27 Comments

  1. It's so obvious what you're doing when you delay that fourth type of fasting and you tell people how interesting it is but you refuse to say what it is. You're just trying to get people to watch the video for longer and it's honestly disgusting that you're using that tactic. Just tell us what it is.

  2. Starting to see? People have been fruit and water fasting for health for a really long time, there are old clinics in Europe, now someone is rediscovering hot water

  3. I was diabetic 15 years ago. Now I can eat rice, potato, rice bread – no problem. Normal blood sugar.
    I use Engineering Science – RCA – root cause analysis to identify the root cause of Type 2 Diabetes – it is industrial fats. Swapped out for natural fats. Takes about 6 months.

    See "15 Years Diabetes Free" for details.

    "The Big Fat Swap" tells the full story.

  4. I was diabetic 15 years ago. Now I can eat rice, potato, rice bread – no problem. Normal blood sugar.
    I use Engineering Science – RCA – root cause analysis to identify the root cause of Type 2 Diabetes – it is industrial fats. Swapped out for natural fats. Takes about 6 months.

    See "15 Years Diabetes Free" for details.

    "The Big Fat Swap" tells the full story.

  5. Dear Thomas, in other videos Dr Fung explained that you dont get more and more ravenous. He says that your hunger goes up and down in a cycle during the day. If you wait 45 mins to an hour your hunger will go down to between-meals base.
    I have found that myself.
    So as you were working in your imagination, so your RAVENOUS hunger was also in your imagination.

  6. I cannot sleep when I am hungry. I can eat dinner and go 18 easily. But that next evening I lay awake wide eyed with no inkling to be still, much less sleep. All I have to do is eat a burger pattie with a slug of unhomogenized whole milk. Zzzzzzz

  7. In my close circle, many people do 2-3x master cleanse a year, which is exactly that: a limited calorie prolonged fast. The benefits are astounding: completely healed fatty liver, sustained weight loss, dramatically better flexibility, energy etc.

  8. Keep fallimg asleep while listening and every time I woke up, Dr Fang was saying the same thing. I'm beginning to think this is an AI interview. Say something, then say it again, and again and sgain. He could have done a 30 minute interview and gotten all the pertinent information included.

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