Shíyù bù zhèn kěnéng shì gānbìng de zǎoqī zhèngzhuàng.
Loss of appetite can be an early symptom of liver disease.
Tips
usage
振 here means 'to rouse / lift up' (as in 振作 'to pull oneself together'). 不振 = not lifted, listless. So 食欲不振 is 'appetite is flat/listless', not 'no appetite at all' — for that say 没胃口.
