SüleymanDemirel Üniversitesi TIP FAKÜLTESİ DERGİSİ: 1998Mart; 5(1) Comparison of Serum Zinc Levels in Infants Fed with Breast Milk and with Formula MilkÖ. Ceran N. Dokuyucu T. A. Sabuncu T. Özkozacı A. Bozaykut S. İnanABSTRACTZinc has been shown to be involved in manyfunctions ofthe enzyme system. This study was designed to determi-ne zinc levels in 101 infants aged 0-5 months who were fed only on breast milk (n=53) and only on formula milk (n=48). infants were divided into subgroups according to their ag.es in months and comparisons \vere made between their respective groups. Serum zinc levels vere determined using the 5 Br-PAPS method. No significant difference was found between serum zinc levels in öne-, two- and three-month-old infants fed only with breast milk and only \vith for¬mula milk, \vhereas in four-and five-month-age groups, significant decrease was observed in infants fed with breast milk (p