I believe the definition of micronutrient covers electrolytes (including phosphorus), but I see what you're saying. There would definitely be challenges! I won

I believe the definition of micronutrient covers electrolytes (including phosphorus), but I see what you're saying. There would definitely be challenges! I wonder suspect this would be alleviated if survivors managed to get like 300 calories a day of various foods, which seems more likely than pure starvation.