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The Real Cause of Weight Gain (It's NOT Willpower)

2026-03-16 Education
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Jason Fung
Jason Fung
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Description

Learn more about Ancestral Supplements: Code: FUNG Link: 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? In this conversation, Dr. Jason Fung sits down with Julia from Ancestral Supplements to explore the hormonal model of weight gain, insulin, ultra-processed foods, and how modern eating patterns may influence metabolism. Topics discussed: • Why “calories in, calories out” may be incomplete • Insulin as a key metabolic hormone • How processed foods can affect hunger and satiety • The difference between whole foods and refined foods • Understanding insulin sensitivity • The role of nutrient density in traditional diets Weight regulation is complex and involves more than simple math. This discussion explores how hormones, food quality, and dietary patterns may play a role. If you found this conversation helpful, consider sharing it with someone who may benefit from hearing it. — Learn more about Ancestral Supplements: https://www.AncestralSupplements.com Follow Ancestral Supplements on Instagram: https://instagram.com/AncestralSupplements Follow Julia on Instagram: https://instagram.com/JuliaTheNutritionist — This content is for educational purposes only and is not intended as medical advice. Statements regarding dietary supplements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.

Top Comments (10)

@EsorNosila 2026-03-16

I have so much respect for Dr.JasonFung. Thank you for getting the good word out there ❤

46 1 replies
@susanjones3723 2026-03-16

I’ve lost 80 pounds due to DrFungs common sense!

38
@SharonHabberley 2026-03-17

Exceptional doctor ! listening to Dr Fung just over a year ago I started fasting, cut carbs and got on a glp1, I have lost 175lb and weigh 175lb I am half the women I was and feel fantastic 😊

34 5 replies
@pscCRPS 2026-03-16

Saying it is all about calories is like saying your car is all about gasoline.

30 1 replies
@KLF-1057 2026-03-16

Dr. Fung is in service to all of us. Thank you Doctor!❤

14
@annettefowler4704 2026-03-16

Very grateful to you Dr Fung. Knowledge is health❤

14
@MarkRaphun 2026-03-16

He has changed my whole perspective and life

12
@doobybro1207 2026-03-18

My iron stores were low. My doctor prescribed iron pills. I ate chicken and caribou liver with sweet peppers. When I saw her again she was angry I never filled the prescription. Guess what happened? Yeah my iron was so high 😅 why don't they just do the right thing?!

11
@fanofmany71 2026-03-18

Dr. Fung helped me crack the hunger code.

4
@MrNimbacounty 2026-03-20

Thanks Dr. Jason Fung. You're saving my life in LIBERIA West Africa. I was at 140 kg but now for the first time in forever, I'm in double digits at 99 kg and counting down to 70 kg. Thanks for your knowledge as I work on changing my life, I will continue to update you as the situation unfolds. Each and everyday, I look for new content with your opinion. Thank you sir. Liberia here

2

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