ICD-11 definition : Iron deficiency is a state in which there is insufficient iron to maintain the normal
physiological function of blood, brain and muscles. It can exist in the absence of
anaemia if it has not lasted long enough or if it has not been severe enough to cause
the haemoglobin concentration to fall below the threshold for the specific sex and
age group. Iron deficiency is the most common nutritional deficiency.;
Iron deficiency is a state in which there is insufficient iron to maintain the normal
physiological function of blood, brain and muscles. It can exist in the absence of
anaemia if it has not lasted long enough or if it has not been severe enough to cause
the haemoglobin concentration to fall below the threshold for the specific sex and
age group. Iron deficiency is the most common nutritional deficiency.