Too little iron can impair your child's ability to function well. However, most signs and symptoms of iron deficiency in children don't appear until iron deficiency anemia occurs. If your child has risk factors for iron deficiency, talk to his or her doctor. Iron deficiency in children can be prevented. To keep your child's growth and development on track, offer iron-rich foods at meals and snacks and talk to your child's doctor about the need for screenings and iron supplements.