RT Book, Section
A1 Heeney, Matthew M.
A2 Rudolph, Colin D.
A2 Rudolph, Abraham M.
A2 Lister, George E.
A2 First, Lewis R.
A2 Gershon, Anne A.
SR Print(0)
ID 7039470
T1 Chapter 431. Iron Deficiency
T2 Rudolph's Pediatrics, 22e
YR 2011
FD 2011
PB The McGraw-Hill Companies
PP New York, NY
SN 978-0-07-149723-7
LK accesspediatrics.mhmedical.com/content.aspx?aid=7039470
RD 2024/04/25
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.