The possibility of overnutrition of iron, i.e. excessive iron provision, has received limited attention. Although iron can cause accidental poisoning due to its toxicity, it has generally been believed that the doses of iron provided in iron supplements and iron fortified foods are modest and that any excess would be excreted. However, some studies suggest that providing iron to infants with adequate iron stores may have adverse effects. Iron drops given to iron-replete Honduran and Swedish infants aged from 4 to 9 months resulted in significantly decreased length gain [6].