e-Library of Evidence for Nutrition Actions (eLENA)

Daily iron supplementation in adult women and adolescent girls

Globally, one in three non-pregnant women, corresponding to almost 500 million women, were anaemic in 2011. At least half of this anaemia burden is thought to be due to deficiency in iron, an essential nutrient for development and cell growth in the immune and neural systems, as well as in regulation of energy metabolism and exercise. Iron deficiency can result from inadequate intake or absorption of dietary iron, increased need during periods of growth, and blood loss from menstruation or helminth* infection. Because women of reproductive age lose iron through menstruation and their diets are often lacking in available iron, they are particularly vulnerable to iron deficiency.

Evidence has shown that daily iron supplementation is associated with reduced risk of anaemia and iron deficiency in menstruating women and adolescent girls, without any side effects.

* Helminths are a group of parasites commonly referred to as worms and include schistosomes and soil-transmitted helminths

WHO recommendations

Daily iron supplementation is recommended as a public health intervention in menstruating adult women and adolescent girls living in settings where the prevalence of anaemia is 40% or higher in this age group, for the prevention of anaemia and iron deficiency.

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This is one of several WHO recommendations on iron with or without folic acid supplementation. The full set of recommendations can be found in 'Full set of recommendations'.

WHO documents

WHO documents


GRC-approved guidelines
Other guidance documents
Evidence

Evidence


Systematic reviews used to develop the guidelines
Related systematic reviews
Clinical trials

Last update:

10 January 2017 16:58 CET

Category 1 intervention

Guidelines have been recently approved by the WHO Guidelines Review Committee

Global targets

Implementation of this intervention may contribute to the achievement of the following targets:

Global nutrition targets

Target 2: 50% reduction of anaemia in women of reproductive age