A decreased desire to eat; loss of appetite. Often caused by illness, stress, or medication side effects.
最近仕事のストレスで食欲不振になっている。
Lately I've had a loss of appetite because of work stress.
高熱が続いていて、食欲不振がひどいと医者に言った。
I told the doctor I've had a high fever and severe loss of appetite.
夏バテで食欲不振になる人が多い。
Many people lose their appetite due to summer fatigue.
抗がん剤治療の副作用で一時的に食欲不振になることがある。
Chemotherapy can temporarily cause loss of appetite as a side effect.