Jason Fung: The Real Cause of Weight Gain (It’s NOT Willpower)
Peer-Reviewed Research
Key Takeaways
- Focus on food quality, not just calories – Processed foods (like Frappuccinos/cookies) spike insulin more than whole foods (beef/salads) even at the same calorie count
- Prioritize insulin control – High-insulin foods (sugars/refined carbs) signal fat storage and increase hunger soon after eating
- Eat real, unprocessed foods – Avoid “enriched” or chemically altered foods; choose whole foods with intact nutrients
- Compare hormonal impact of foods – 500 calories of cookies ≠ 500 calories of broccoli in fat storage effects due to insulin response
Products & Gear Mentioned
- Books by Dr. Jason Fung: The Obesity Code, The Diabetes Code, The Complete Guide to Fasting, The New Hunger Code
Notable Quotes
“It’s not willpower. It’s not because they’re lazy or stupid. It is the case that you’re eating not real food.”
Bottom Line
Stop counting calories and start choosing whole, unprocessed foods that naturally regulate insulin and hunger signals for sustainable weight management.
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- Jason Fung’s Full Protocol — supplements, dosages, and daily routine
- Compare All Protocols — side-by-side protocols
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Medical Disclaimer
This article is for informational purposes only and does not constitute medical advice. The research summaries presented here are based on published studies and should not be used as a substitute for professional medical consultation. Always consult a qualified healthcare provider before making any changes to your health regimen.
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