Most people are told that “weight loss = calorie deficit.” But the truth is, a calorie deficit is a myth. Your body is not a simple calculator where you just subtract calories and lose fat. In this video, Dr. Jason Fung explains the science behind why focusing only on calories fails, and why hormones, insulin, and fat metabolism are the real keys to healthy and lasting weight loss.

When people try extreme dieting or drug-induced appetite suppression, they often experience side effects like the dreaded “Ozempic face” — hollow cheeks, sagging skin, and an unhealthy look. This happens because subcutaneous fat (the fat under the skin) gets burned instead of visceral fat (the dangerous fat around your organs). The result: you may lose weight, but you don’t look or feel healthy.

Fasting works completely differently. Instead of just cutting calories, fasting changes your hormones and metabolism:

�� Insulin drops, allowing fat burning to start

�� Growth hormone rises, protecting muscle and skin elasticity

�� Autophagy activates, repairing tissues and preventing loose skin

�� Visceral fat is targeted, which improves health and appearance

�� Brown fat (through beiging) is activated, boosting metabolism naturally

That’s why people who fast look healthier, stronger, and younger compared to those who follow harsh calorie-restricted diets. In this video you’ll discover:

✅ Why calorie restriction almost always fails

✅ The science of subcutaneous vs. visceral fat

✅ How fasting avoids the “Ozempic face” problem

✅ The role of hormones in fat burning and aging

✅ How fasting improves skin health, prevents sagging, and supports long-term fat loss

�� If you’re serious about losing weight without losing your health or youthful look, this video is a must-watch.

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⏱️ Chapters / Timestamps

0:00 – Introduction: Why “calorie deficit” is a myth

1:10 – The calorie counting problem explained

2:30 – How calorie restriction affects your body

3:45 – Subcutaneous vs. visceral fat: which one really matters?

5:20 – Why fasting is different from dieting

6:40 – Hormonal impact: insulin, growth hormone & fat burning

8:00 – Fasting and skin health (no sagging, no hollow cheeks)

9:25 – Autophagy and natural skin tightening

10:45 – White fat vs. brown fat (the beiging effect)

11:50 – Key takeaway: Why calorie deficit cannot ever exist