Jason Fung
Dr. Jason Fung, a Canadian nephrologist and author of The Obesity Code, shares scientific explanations of weight loss, type 2 diabetes reversal, nutrition and intermittent fasting. The show breaks down the biology of calories, diets and fasting, and explains why conventional calorie-counting advice so often fails. Episodes include practical regimens, patient stories and insights drawn from his decades of treating patients. It is the official channel of Dr. Fung's educational videos on metabolic health.
Episodes
What is the Best Fast Length? (Fasting Basics 3) | Jason Fung
Dr Jason Fung discusses the best fast lengths for you, including 16;8, Time Restricted Eating, 24 hour fasts, One Meal a Day (OMAD), 5:2 diet, extended fasting and more. Shorter fasts are best done more often, but longer fasts (extended fasting) are more powerful. The best fast is the one that fits into your lifestyle. Fit your fasting into your lifestyle, don't fit your lifestyle into fasting. Ch
Fasting and Weight Loss - Solving the Two-Compartment problem
Why intermittent Fasting is a simple solution for weight loss. Body fat is simply a method of storing food energy. When we eat, our body wants to store those calories. When we don't eat (intermittent fasting), our body uses those calories. So, if we want to lose body fat, increase the duration of time that we are not eating. Check out my blog at https://medium.com/@drjasonfungMore Information:BOOK
Type 2 Diabetes isn't Genetic ... It's Caused by THIS
Are you struggling to understand the real root cause of Type 2 Diabetes?For decades, the medical community has focused on insulin resistancewithout clearly explaining what actually causes the cells to becomeresistant in the first place.In this comprehensive masterclass, we break down the science of insulinresistance and reveal why the outdated 'Lock and Key' (internalstarvation) theory fails to ex
Reversing Insulin Resistance (The Obesity Code Lecture part 3)
Exploring the role of insulin resistance and diet. How hormonal obesity theory explains the epidemiology of obesity. Check out my blog at https://medium.com/@drjasonfungMore Information:BOOKS:The Obesity Code - Reviewing underlying physiology of weight loss and how low carb diets and fasting can help. https://www.amazon.com/dp/1771641258?ref=exp_jasonfung_dp_vv_dThe Diabetes Code - Reviewing how
Control HUNGER, not Calories
Preorder The Hunger Code and receive over $500 worth of free bonuses. Check https://www.doctorjasonfung.com/gift-with-purchase-offerWhy do so many people struggle with weight loss even when they carefully count calories?In this video, Dr. Jason Fung explains a powerful shift in thinking: instead of obsessing over calories, we should focus on controlling hunger. Hunger is not a lack of willpower—it
Complete Guide for Type 2 Diabetes Reversal | The Diabetes Code Clinic (Part 2)
Welcome back to The Diabetes Code Clinic, hosted by Dr. Jason Fung. If you missed Part 1, we covered the fundamentals of Type 2 Diabetes, including how it develops and how to start reversing it. In this episode, we dive deeper into the powerful role of a low-carb diet in achieving remission of Type 2 Diabetes.Learn why Type 2 Diabetes is essentially an overflow problem caused by excess sugar in yo
Two Big Lies about Type 2 Diabetes
The first big lie is that Type 2 Diabetes is chronic and progressive. The second lie is that treatment of blood sugar is the primary target of therapy. Check out my blog at https://medium.com/@drjasonfungMore Information:BOOKS:The Obesity Code - Reviewing underlying physiology of weight loss and how low carb diets and fasting can help. https://www.amazon.com/dp/1771641258?ref=exp_jasonfung_dp_vv_
The Real Cause of Weight Gain (It's NOT Willpower)
Learn more about Ancestral Supplements:Code: FUNGLink: https://ancestralsupplements.com/FUNG(Disclosure: This video was sponsored by Ancestral Supplements. Note that I use this brand personally at this moment because I believe in a whole food supplement)Most people still believe weight gain is simply about calories.But if calorie restriction alone worked long-term, why do so many people struggle?I
I tried the 5 day modified fast. Surprisingly easy.
I’m sharing my personal experience with the fasting mimicking diet (FMD). I’ll break down how it works, the science behind it, and whether it’s worth trying.I’ve been talking about fasting since 2014, but one of the few researchers exploringfasting at the time was Dr. Longo in California. He discovered that fasting triggersbeneficial repair processes in the body, but fasting for five days can be t
A Conversation with Dr. Robert Lufkin | Jason Fung
🌟 Welcome to the Fasting and Longevity Summit 2.0! 🌟A Conversation with Dr. Robert Lufkin | Jason FungHi, everyone! This is Dr. Jason Fung, and I’m thrilled to introduce you to the Fasting and Longevity Summit 2.0, hosted by myself, Dr. David Jockers, and Dr. Joseph Anton. This groundbreaking event features insights from over 40 of the world’s top health experts, sharing strategies to help you tak
How Calories Are Different for Weight Loss (Science) | Jason Fung
Dr. Jason Fung explains how and why all calories aren't the same. The term 'A Calorie is a Calorie' assumes that only the amount of calories is important and not the type of calories. Yet different calories have different hormonal effects on our bodies which impacts their fattening effect. Check out my blog at https://medium.com/@drjasonfungMore Information:BOOKS:The Obesity Code - Reviewing under
Why Do We Get Fat? Part 2 - It's the Insulin, stupid!
Pre-order The Hunger Code at www.doctorjasonfung.com. Check out hunger management tools at www.drinkaeira.comStop counting calories. If 'Calories In, Calories Out' really worked, why do those dietsfail 99% of the time? In this video, Dr. Jason Fung explains why obesity is not acaloric imbalance, but a hormonal imbalance—specifically involving insulin.Most people believe that weight gain is a perso
How to Lower Blood Sugar Without Cutting Carbs - The Diabetes Code Clinic part 6/6
📌 Advanced Dietary Strategies to Reverse Type 2 Diabetes NaturallyHow to Lower Blood Sugar Without Cutting Carbs | Dr. Jason Fung ExplainsIn this video, Dr. Jason Fung shares 9 powerful and science-backed strategies tolower your blood glucose levels without completely cutting out carbohydrates fromyour diet. If you’re struggling with type 2 diabetes, insulin resistance, or prediabetes— this video
Is Salt Bad for You? (Shocking)
Is salt bad for our health? Should we follow a low salt diet? An in-depth analysis of available data and the surprising conclusion. A low salt diet does not lead to less heart disease or stroke. Check out my blog at https://medium.com/@drjasonfungMore Information:BOOKS:The Obesity Code - Reviewing underlying physiology of weight loss and how low carb diets and fasting can help. https://www.amazo
Best Weight Loss Plans Reviewed (2021) | Jason Fung
Dr. Fung reviews the best diets for weight loss as ranked by Google search. The third most popular diet in 2020 was the Paleo diet. While there is good scientific evidence to support it, it has been steadily losing popularity and Dr. Jason Fung explains why. The second most popular diet of 2020 was intermittent fasting, an intervention gaining steady popularity and supported by Dr. Fung. The most
Controlling the 'Body Fat Thermostat'
Are you struggling to lose weight despite eating less and exercising more? It’s time to stop blaming your willpower and start understanding your biology.Dr. Jason Fung, best-selling author of The Obesity Code, explains the revolutionary concept of the "Body Fat Thermostat." Just like your home’s AC maintains a specific temperature, your body has a "set point" for how much fat it wants to carry.If
A Conversation with Dr. Brian Lenzkes | Jason Fung
🌟 Welcome to the Fasting & Longevity Summit 2.0 Series! 🌟A Conversation with Dr. Brian Lenzkes | Jason Fung📢 Don’t Miss the Fasting & Longevity Summit 2.0!Get exclusive access to interviews with top experts and game-changing fasting insights. Sign up for the Summit before it’s too late!👉https://drtalks.com/summit/fasting-longevity?uid=828&oid=87&ref=3679Join Dr. Jason Fung as he embarks on an ext
Weight Loss Plateau (7 Quick Strategies to Break Through) | Jason Fung
Struggling with a weight loss plateau? This can happen on any diet. Dr Jason Fung shares 7 strategies to break through the weight loss plateau. Check out my blog at https://medium.com/@drjasonfungMore Information:BOOKS:The Obesity Code - Reviewing underlying physiology of weight loss and how low carb diets and fasting can help. https://www.amazon.com/dp/1771641258?ref=exp_jasonfung_dp_vv_dThe Diab
What causes Ozempic face and how to avoid it
Dr. Jason Fung reveals the science of facial fat loss, subcutaneous vs. visceral fat,and how to lose weight without damaging your appearance.Have you ever seen someone lose a lot of weight but end up looking tired, old, oreven sickly? You might’ve heard the term “Ozempic Face” — a phrase describing thehollow cheeks, sunken eyes, and wrinkled skin people often get after rapid weightloss through app
Diet and Disease (The Obesity Code Lecture part 5)
Exploring the link between diet and disease. How are diabetes, heart disease, stroke, obesity and cancer linked to our diet? Understanding this association leads to fascinating new treatment possibilities. Check out my blog at https://medium.com/@drjasonfungMore Information:BOOKS:The Obesity Code - Reviewing underlying physiology of weight loss and how low carb diets and fasting can help. https:/
Intermittent Fasting for Type 2 Diabetes Reversal | The Diabetes Code Clinic (Part 4)
Welcome to The Diabetes Code Clinic (Part 4) with Dr. Jason Fung! This episode explores how intermittent fasting can effectively reverse type 2 diabetes by addressing the root cause—excess glucose in the body. Dr. Fung breaks down the science behind fasting, provides actionable steps to safely start fasting, and shares inspiring success stories of individuals achieving diabetes remission.Whether y
How to Reverse Type 2 Diabetes Naturally | Jason Fung
Reverse Type 2 Diabetes naturally, without medications. It is a curable disease, but as a dietary disease, it demands a dietary treatment. The principles including fasting and weight loss are outlined. Dietary modification is the cornerstone of reversing type 2 diabetes. Check out my blog at https://medium.com/@drjasonfungMore Information:BOOKS:The Obesity Code - Reviewing underlying physiology o
The Obesity Code Lecture (Why do we get Fat?) Part 1
Unlocking the code of why obesity became such a massive epidemic since the 1970s. A scientific exploration with a surprising conclusion of how obesity developed. Practical tips on weight management and good health. Why calorie counting fails for many people. Check out my blog at https://medium.com/@drjasonfungMore Information:BOOKS:The Obesity Code - Reviewing underlying physiology of weight loss
Hormones in Weight Loss (The Obesity Code Lecture part 2)
Insulin and cortisol are key hormones in weight loss. Our body gains or loses fat based on the hormonal instructions we give it. When insulin is high, we store fat. We discuss why the Atkins diet lost popularity for a time and why it rebounded in new forms. The role of the stress hormone cortisol in weight loss. Check out my blog at https://medium.com/@drjasonfungMore Information:BOOKS:The Obesit
As good as Ozempic? Tools for Managing Hunger
Check out www.drinkaeira.com. I don't own any part of the company or get paid commission. Neither is this a sponsored video. Most people believe that counting calories is the key to weight loss, but that is a major misconception. The real secret to lasting weight loss isn't about calories—it's about controlling hunger. Drugs like Ozempic and GLP-1 agonists have proven this by targeting appetite, b
A Conversation with Dr. Tro Kalayjian | Jason Fung
📢 Don’t Miss the Fasting & Longevity Summit 2.0!Get exclusive access to interviews with top experts and game-changing fasting insights. Sign up for the Summit before it’s too late!👉https://drtalks.com/summit/fasting-longevity?uid=828&oid=87&ref=3679Welcome to the Fasting and Longevity Summit 2.0, hosted by Dr. Jason Fung, a global leader in fasting and metabolic health. In this transformative epis
Fructose and Fasting (The Obesity Code Lecture 4)
Why fructose and sugar intake plays such a major role in weight gain and diabetes. Intermittent fasting is a great method of reversing insulin resistance and losing weight. Check out my blog at https://medium.com/@drjasonfungMore Information:BOOKS:The Obesity Code - Reviewing underlying physiology of weight loss and how low carb diets and fasting can help. https://www.amazon.com/dp/1771641258?ref=
A Conversation with Cynthia Thurlow | Jason Fung
🌟 Transform Your Health with Expert Insights 🌟A Conversation with Cynthia Thurlow | Jason Fung📢 Don’t Miss the Fasting & Longevity Summit 2.0!Get exclusive access to interviews with top experts and game-changing fasting insights. Sign up for the Summit before it’s too late!👉https://drtalks.com/summit/fasting-longevity?uid=828&oid=87&ref=3679Join Dr. Jason Fung, renowned fasting and longevity expe
LEAST Helpful Diet Advice | Jason Fung
Dr. Jason Fung reviews the conventional but least helpful diet advice to lose weight. This advice is repeated over and over by doctors, dieticians and magazines but are not useful. "Choose the Best Diet for You" or sometimes "The best diet is the one that you can stick to" is advice that just doesn't work. The second piece of bad diet advice is "Eat everything in Moderation". That doesn't work eit
Insulin Toxicity (How to Reverse Type 2 Diabetes)
Dr. Jason Fung explains the toxicity of insulin and how it makes diabetics worse, not better. This leads to a discussion of rational treatment to cure diabetes without drugs, without surgery and without cost. Check out my blog at https://medium.com/@drjasonfungMore Information:BOOKS:The Obesity Code - Reviewing underlying physiology of weight loss and how low carb diets and fasting can help. http
The Food Pyramid Lie: Why we got Fat
Check out Aeira powdered bone broth for managing hunger during fasting at www.drinkaeira.comFor decades, we were told to follow the Food Pyramid. We were told to eat 6-11 servings of bread and pasta a day and fear dietary fat. We followed the rules. But instead of getting healthier, the world got sicker and more obese. Why?In this video, I expose the truth behind one of the biggest failures in mod
Is Saturated Fat Bad? (Science says... No!) Obesity Code Lecture 6
Is eating saturated fat bad for us? Does eating fat cause obesity? Heart disease? Stroke? How did we become so fat phobic? Are vegetable oils healthy? A critical look at the wealth of scientific data suggests that eating fat (total) and saturated fat might actually protect us from disease. Check out my blog at https://medium.com/@drjasonfungMore Information:BOOKS:The Obesity Code - Reviewing unde
Does Fasting Destroy Your Muscle? | Jason Fung
Does intermittent fasting destroy muscle? Many people worry about this, but what does the science say? Celebrities like Terry Crews use intermittent fasting to not only lose weight but also build muscle. Learn why fasting does not burn muscle. Check out my blog at https://medium.com/@drjasonfungMore Information:BOOKS:The Obesity Code - Reviewing underlying physiology of weight loss and how low car
Why Do We get Fat? Part 1 - The Biggest Lie in Obesity Medicine
This is Why You're Not Losing Weight (Its Not Calories) | Dr. Jason FungPre-order The Hunger Code - Out March 2026 at www.doctorjasonfung.comVisit www.drinkaeira.com for hunger management tools.Stop counting calories! It's the biggest, most damaging lie in obesity medicine.In this video, Dr. Jason Fung, the best-selling author of The Obesity Code & The Hunger Code dismantles the single biggest myt
The Real Reason You Can't Lose Weight (Hormones and Obesity - a Masterclass)
Have you been told that losing weight is simply about "eating less and movingmore"? For decades, the "Calories In, Calories Out" model has been the goldstandard for weight loss. But what if it is completely wrong?In this Masterclass, I break down the real reason you can't lose weight:Hormones. We dive deep into the science of obesity and explore why caloriecounting fails 99% of the time, as proven
A Conversation with Dr Bosworth | Jason Fung
🌟 Welcome to the Fasting & Longevity Summit 2.0 Series! 🌟A Conversation with Dr Bosworth | Jason Fung📢 Don’t Miss the Fasting & Longevity Summit 2.0!Get exclusive access to interviews with top experts and game-changing fasting insights. Sign up for the Summit before it’s too late!👉https://drtalks.com/summit/fasting-longevity?uid=828&oid=87&ref=3679We’re thrilled to launch a groundbreaking new seri
Muscle - The secret endocrine Organ to keep you healthy - A conversation with Dr. Gabrielle Lyon
Why does muscle matter so much—not just for strength, but for fat loss,insulin sensitivity, metabolism, and long-term health?In this in-depth conversation, Dr. Jason Fung sits down with Dr. Gabrielle Lyonto explore why muscle is one of the most misunderstood—and mostimportant—organs in the human body. This discussion challenges the traditionalcalorie-focused model of weight loss and reframes healt
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