orthorexia
noun [uncountable]a medical condition in which somebody avoids eating particular types of food in the belief that they are harmful to health 矫正症：一种医学状况，有人认为饮食对健康有害，因此避免进食 A person with orthorexia will be obsessed with defining and maintaining the perfect diet. 一个患有直立性斜视的人会痴迷于定义和维持完美的饮食。