Well, all your body needs is calories which should be 1800 calories per day for a person to be healthy, so its your choice how you want to take it and how much you want to take it, so if you concede more than your body need then it becomes fat leads to obesity and if its upside down the body will take the energy from the stored fat but its just usually a backup which can work for a while.
your body does not need calories..
calories are not even a substance or nutrient
calories are a mathematicians unit of a calculation of something else
your body needs a whole range of real nutrients.
sugars&fats, vitamins, proteins, minerals
of those 4 categories there are different individual nutrients
for instance
sugars&fats is the family of: dextrose, glucose, fructose, lactose, sucrose, maltose
and they all have different reaction, effect and need of the body
Yeah, technically calorie is unit that define the energy consumed by human but yeah, for someone needs to be considered healthy they need a balanced diet of macronutrients (carbohydrates, proteins, and fats) as well as micronutrients (vitamins and minerals). And it really varies depending on our body needs It comes to the point, that you may need a lot of food or just a portion but only you get to decide that.
of those family of sugars and fats. although mathematicians count them equally as "calories"/energy.. they have a different glycaemic index of how much energy they release per hour but calories does not count them this way
having a soda with Y teaspoons of sugar. vs solid food of same Y teaspons of sugar suggest the same calories.. but in fluid form(soda) your bodies energy spikes more
anyways we are getting offtopic(in a off topic category)
OP's post imagining daily food delivery to the moon/space station is a fantasy due to the cost of delivery..
however when they start "space mining" and colonising the moon. they will be doing regular deliveries of equipment using re-usable rockets and those payloads wil have food supplies.. and seeds.. where eventually after time the moon will be growing their own produce
