Sick I NEED ANSWERS VERY SOON URGEN

One of my people is very weak and her health is terrible but she's happy and fed very much, and the doctor says nothing is wrong

Fruit, vitamins, organic fruits and veg I guess all organic groceries would help and rest

try trapping them between the furniture and the wall. then they're forced to "rest" and their health can return a little. they don't stay there forever (at least mine didn't), but it was just enough to go from "very weak" to "a bit weak".
All you gotta do is drop the person very close to where a piece of furniture is against a wall - the half walls work great - and they can't get out.