If a baby doesn't get enough iron, it might also miss out on other important nutrients, and that could make their brain and organs grow slower or not as well.

When kids under 7 don’t have enough iron in their blood, it can make it harder for them to think clearly and move smoothly, because their brains aren’t getting the right materials to grow and work properly.

Kids who don’t have enough iron in their blood are often the same kids who have trouble paying attention or who behave in ways linked to ADHD or autism.