"In the end, of course, thermodynamics holds and if you eat 1000 calories (no matter what form they take) when you need at a minimum 1500 then 100% yoi will lose weight. But how fast, how easy or how healthy that would be is a different story depending on what you're eating."
"if you eat 1000 calories (no matter what form they take) when you need at a minimum 1500 then 100% you will lose weight"
And then I added:
"how fast, how easy or how healthy that would be is a different story depending on what you're eating."
You can lose weight (or maintain weight) only drinking 1000 calories worth of soda everyday. But it will be harder, way harder, than losing weight by eating 1000 calories of baked cauliflower with some nuts and some parmesan.