[radix07]

If you ask the Keto people, they will say you can. But the point being made is to eat healthy real food. Sure you can be dumb about it, but it's a good starting place.

Yes, the human body is very complex and metabolisms and people are all different, but you can't really do too much about that. So just eat healthy, eat less, burn more calories. What else can you do?

[cimmanom]

The point is that the reason that there's so much diet advice out there beyond calories in < calories out is that accomplishing calories in < calories out on an ongoing basis is HARD.

The advice (aside from the scams and a little bit of idiocy) is on how to achieve that deficit in a way that minimizes the willpower required - because humans suck at willpower and one's biology is constantly trying to undermine that willpower in order to achieve the "store more reserves" imperative.