Sorry my point was more that I'm okay going at a 1000 calorie daily deficit and that I just accept the inevitable hunger. This differs from many approaches which seem to chase the holy grail of finding food that's very filling, but also very low in calories and usually not going for that extreme a calorie deficit.

Put another way, mine is the stubborn bull-headed weightloss plan. Basically I just try to climb the mountain the fastest and most painful way and then be done with it.

Got it, that makes sense. I tend to the filling but low calorie approach (vegetables!) myself with around a 750kCal deficit.

> If your body needs 2500 calories a day and you eat 2000

Very few people require 2500 calories a day, particularly with modern sedentary lifestyles.

Plus, aside from the thermodynamics component, from a nutrition standpoint not all calories are the same.

"Very few people require 2500 calories a day, particularly with modern sedentary lifestyles"

That doesn't have anything to do with my point. (Although mercifully my TDEE is closer to 3kCal)

"Plus, aside from the thermodynamics component, from a nutrition standpoint not all calories are the same."

Again, we're talking about weight loss which pretty much is thermodynamics.