>>280029798>Which is still more calories than a Japanese male needs in a day.Roughtly 2000-2500 calories is what most men need per day to maintain weight, even disregarding activities.
If you're on a diet you should never go below 1500 while keeping yourself below 1900, otherwise your body will start to eat into your muscles and go into starvation mode.
Calories are not the same either and what is on said pizza, what the dough contains and shit all impact how unhealthty or not said pizza is.