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Weight Loss Videos - Health Topics
The Real Reason You Can't Lose Weight
Jason Fung (15 minutes)
Published by: Jason Fung - 14 July, 2026
Have you been told that losing weight is simply about "eating less and moving more"? For decades, the "Calories In, Calories Out" model has been the gold standard 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 calorie counting fails 99% of the time, as proven by massive studies like the Women's Health Initiative.
Weight gain is not a character flaw or a lack of willpower—it is a hormonal imbalance. We will discuss exactly how hormones like Insulin, Cortisol, Thyroid, and Testosterone control your body fat, and more importantly, how you can fix it.
