noun
loss of appetite; anorexia
Medical and everyday term for reduced desire to eat. The gloss 'anorexia' refers to the symptom, not necessarily the eating disorder anorexia nervosa.
夏バテで食欲不振になった。
I lost my appetite due to summer fatigue.
食欲不振が続くようなら、病
If your loss of appetite persists, you should see a doctor.