This systematic review indicates that iron supplementation increases  Hb levels in children significantly but modestly .
The increase is greater in subjects who are anaemic at the start of the trial and lower in malarial hyperendemic areas and in those consuming iron-fortified food .
OBJECTIVE To evaluate the effect of iron supplementation on  haemoglobin ( Hb ) in children through a systematic review of r and omised controlled trials .
Iron deficiency and educational achievement in Thailand.
This double-blind clinical trial was conducted in Thail and to assess the impact of iron treatment on the IQ and educational attainment of 1358 9 - 11-y-old children . The children were classified into one of three groups : iron replete , iron depleted , and iron-deficient anemic . The Raven Progressive Matrices was used to measure IQ . A Thai language and a math test were administered to assess school attainment . A 50-mg/d tablet of ferrous sulphate was given for 2 wk and a 100 mg/d tablet , for 14 wk . An anthelminthic drug was given on the day of the blood test before treatment and 3 mo after the intervention started . There is evidence of a positive association between iron status and IQ and a language school achievement test but there is no support for the internal validity of the hypothesis that this association is causal
This systematic review indicates that iron supplementation increases  Hb levels in children significantly but modestly .
The increase is greater in subjects who are anaemic at the start of the trial and lower in malarial hyperendemic areas and in those consuming iron-fortified food .
OBJECTIVE To evaluate the effect of iron supplementation on  haemoglobin ( Hb ) in children through a systematic review of r and omised controlled trials .