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 you only focus on "Calories In vs. Calories Out" without addressing your hormones, your body will fight back by increasing your hunger and slowing down your metabolism. This is why most diets fail in the long run!
In this video, we dive deep into:
✅ The Science of Homeostasis: Why your body resists weight change.
✅ Hormones vs. Calories: The real role of Insulin, Cortisol, and GLP-1 in fat storage.
✅ The "Big Lie" of Dieting: Why eating fewer calories can sometimes lead to more fat storage.
✅ Resetting the Set Point: Practical insights on how to naturally lower your body's fat thermostat.
✅ Homeostatic Hunger: How to control your appetite by choosing the right foods.
Weight loss isn't just about math; it's about hormonal balance. Whether you're interested in intermittent fasting, low-carb living, or simply improving your metabolic health, this deep dive will change the way you look at your body.
Recommended Books by Dr. Jason Fung: 📖 The Hunger Code 📖 The Obesity Code 📖 The Diabetes Code
💬 WE WANT TO HEAR FROM YOU! Have you ever experienced the "rebound" effect after a diet? What is the biggest challenge you face when trying to eat healthy? Let’s start a conversation in the comments below!
👍 If this discussion helped you, like the video and subscribe for more science-based insights on fasting, hunger, and metabolic health.
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⏱️ Chapters / Timestamps
00:00 – Introduction to the Hunger Code
01:30 – What is Homeostasis?
03:45 – The Body Fat Thermostat Explained
06:15 – Why Calorie Counting Fails (The Big Lie)
08:20 – Hormones that Cause Weight Gain (Insulin & Cortisol)
10:45 – Hormones that Aid Weight Loss (GLP-1 & Testosterone)
12:10 – How to Naturally Lower Your Set Point
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📌 BOOKS:
👉 The Obesity Code – Reviewing underlying physiology of weight loss and how low carb diets and fasting can help. ?…
👉 The Diabetes Code – Reviewing how type 2 diabetes is a reversible disease and dietary strategies. ?…
👉 The Cancer Code – Scientific exploration of how cancer develops – ?…
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📌 YouTube Medical Lectures (for specialist physicians):
▶️ The Roots of the Obesity Epidemic: https: // • The Obesity Epidemic, Explained
▶️ Therapeutic Fasting – The Two Compartment Problem:https: // • Fasting and Weight Loss – Solving the…
▶️ Does Calorie Counting work?: • Why Calorie Counting rarely leads to …
▶️ Two Big Lies of Type 2 Diabetes: • Two Big Lies about Type 2 Diabetes
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😍 😍 Thank you for Watching!


Interesting new book! ❤️
Ordered book !!!
Thank you so much for sharing your invaluable knowledge Dr.Fung!!!🙏🏽👏🏽
Free masterclass and other bonuses (value over $500) with pre-orders of The Hunger Code – https://www.doctorjasonfung.com/gift-with-purchase-offer
I preordered two months ago. Can’t wait to receive and read.
I tried to do this, but it just took me around in a circle.
You are the best Jason!
Your knowledge is very impressive I am accountant but you are really impressive a man doesn’t need fame truth always on your mouth love from Pakistan
Your presentations are always refreshing, Dr Fung. On Day 18 of a LCHF + ADF routine and in need of a little boost. Looking forward to consolidating this routine as a lifestyle change.
I love hearing your voice and the passion and logic you use as you explain. I wish You narrated all your books. 🙏🏼 😍
Methamphetamines and crack are 2 totally different things
You’re my Hero! Thank you with all my ❤️. It’s working. I’m going to reverse insulin resistance i have the power! Thanks to you! God Bless You.
We love you Dr. Fung ❤ Cant wait for the masterclass with your book!!
Amazing tip… controle the hunger🙏💕
Our ancestors needed much body fat to survive long winters when food was scarce.
Book is on order 😊
DR FUNG YOU ARE SAVING LIVES you’re one of my heroes.
Absolutely Love how these videos break things down and make them relatable. Also hilarious!
“This is just STOOPID” 😅 I love you Dr. FUNG ❤
unfortunately there are imbeciles such as Peter Attia that believe, or says so, that 100kcal of cookies and broccoli are the same!
At first I thought you were wearing an apron and gonna cook for us lmao
Can’t wait to the translation into Dutch!