run-down (someone's) health

Translations
(чье-либо) здоровье ухудшается
After months of stress and long hours, her health was run-down.
После месяцев стресса и долгих часов работы, ее здоровье ухудшилось.
Definitions
To cause someone's health to deteriorate or weaken, often due to stress, overwork, illness, or neglect.