TY - CHAP M1 - Book, Section TI - Chapter 431. Iron Deficiency A1 - Heeney, Matthew M. A2 - Rudolph, Colin D. A2 - Rudolph, Abraham M. A2 - Lister, George E. A2 - First, Lewis R. A2 - Gershon, Anne A. PY - 2011 T2 - Rudolph's Pediatrics, 22e AB - Despite being the most abundant metal on earth, iron is the most prevalent single nutrient deficiency worldwide. The term newborn possesses about 75 mg of elemental iron/kg (0.25–0.5 g of total body iron) and must absorb about 4.5 g of iron during childhood, or about 1 mg/d, to achieve the nearly 5.0 g of body iron in the average adult. An additional 0.2 to 0.5 mg/day of absorbed iron is required to balance physiologic losses (eg, desquamation of epithelial cells in the gastrointestinal tract). During periods of maximal growth—infancy and adolescence—the iron requirements for expanding blood volume and muscle mass may exceed the rate of dietary iron accrual. SN - PB - The McGraw-Hill Companies CY - New York, NY Y2 - 2024/04/19 UR - accesspediatrics.mhmedical.com/content.aspx?aid=7039470 ER -