Dr. Jason Fung

So instead of the opposite situation, and you see that the calories are the same.

You went from 2,000 in to 1,500 in.

But what the difference was that you allowed insulin to fall, which allowed you to burn body fat, right?

It's the hormonal signal that says...

Please take energy out, open up the doors so that body fat can come out.

And this is the piece that's missing because people are all like, well, I'm this, I'm that.

And it's like, well, why can't you burn the fat that's on your body?

Because there's 200, 300,000 calories of body fat.

Why can't you access it?

It's because you haven't activated the right hormones so that you can access it.

So now if you do intermittent fasting, you eat 1500 calories, you take 500 calories out, your body's burning 2000.

Now all of a sudden, if you go off your diet and you go back to 2000 calories, guess what?

You don't gain weight, you don't lose weight.

Same as before.

Whereas before you go even to 1800 calories, you lost weight.

But the difference was not the calories, it was always 2000 to 500.

The difference was you paid attention

to the hormones that you're telling your body.

And the insulin is sort of the primary hormone.

There's actually a lot more.