PREVALENCE
Prevalence of iron depletion and iron deficiency anaemia among adolescents in Norway [Ref 32,33]
Haemoglobin values among adolescents in Norway [Ref 32]
Iron status among cross country skiers in hard training (boys 16-19 years, 1980-1981)
Note: Adolescent boys in hard training (25 h per week) seems to have higher iron requirements than the controls. The two active groups had similar and healthy diets with low fat and sugar.