anorexia nervosa
noun [ U ] uk/æn.əˌrek.si.ə nəˈvəʊ.sə/ us/æn.əˌrek.si.ə nɚˈvoʊ.sə/ (informal anorexia)
（尤指女性由于害怕变胖而引起的）厌食（症）;食欲缺乏
a serious mental illness in which a person does not eat, or eats too little, often resulting in dangerous weight loss
Reports of anorexia and other eating disorders are on the increase. 患厌食症以及其他饮食紊乱症的病例数量不断上升。
Compare: bulimia