There's a difference between malnutrition due to scarcity and malnutrition due to overconsumption of the wrong nutrients, though.
Kids need to be taught proper eating habits and school lunches need to be sufficiently nourishing and not pizza/chicken nuggets/cheeseburgers/tacos/pasta every day of the week like they had when I was younger.
You didn't get the prepackaged "grilled cheese"? I am not joking, this was a real thing my real school really served. I was astonished that such a thing was real.
Here in the states the recruiters just lowered their standards for health and education, maybe on the pretense they can smarten / thin their recruits a bit during basic.
So this is why counter-recruitment still has work to do. Remember whatever the US Armed forces promises you, it doesn't count if it's not written in your contract, and it won't make much of a difference if you discharge out medically or are dead. And a lot of people are grievously wounded or killed in the military way before the combat happens.
PS: Your recruiting officer will lie to you. Mine did.
Mentally fit, and physically fit enough to pass basic training and not get scoffed at. A lot of reading involved too. Can involve PTSD. Drones from the field? Standard soldier stuff. They're only a few kilometers at most away from their drones