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近来,由于测定头发内锌含量,指出美国的婴儿和4岁以下儿童体内含锌量较低。也观察到头发内锌含量低和食欲低下,生长发育差有关,并且其他方面正常的小儿可出现低锌症状。在有些地区,异食癖的发病率较高,表现为食土癖,发现于青春期男子,有严重的低锌症状。是否因食土癖使锌含量不足,或是先有此主要微量营养素(锌)的不足而引起了异食癖的症状,尚不清楚。本篇报导1例2岁女孩,她出生时一切正常,以后也未患过重要疾病。但从6个月起食欲较差,于18个月时食欲极度低下,开始咬嚼金属物件,有时咬她
Recently, due to the determination of zinc content in the hair, it has been suggested that the zinc content in infants and children under the age of 4 in the United States is low. Also observed in the hair, low zinc content and poor appetite, poor growth and development, and other aspects of normal children may appear low zinc symptoms. In some areas, the incidence of pica is higher, manifested as eating habits, found in adolescent men, there are serious symptoms of low zinc. It is unclear whether the symptoms of pica occur as a result of inadequate zinc levels due to potash, or deficiencies of this major micronutrient (zinc). This article reports 1 case of 2-year-old girl, she was born at a normal condition, but also did not suffer from important diseases. However, the appetite was poor from 6 months on and her appetite was extremely low at 18 months and started to crunch metal objects and sometimes bite her