> Then how does ozempic, whose primary mechanism of action is to decrease appetite, work for obese people?

That is a very interesting question.

> your body is not magic.

But it is a complex, highly adaptable system. The simplistic formula of calorie input = output is highly misleading.

> If you feed it a sufficiently low amount of calories

Sure, if you starve yourself, you'll start transitioning to dust pretty soon.