Yànshízhèng shì yì zhǒng yánzhòng de yǐnshí zhàng'ài.
Anorexia is a serious eating disorder.
Tips
usage
Used as both a symptom (loss of appetite) and a disorder when combined with 症: 厌食症 = anorexia nervosa. 厌 means 'detest / be tired of'; compare 讨厌 tǎoyàn (dislike).