Is it bad for an infant eats dirt?

Not recommended. Many children eat bits of dirt now and again. It is not recommended and most suffer no harm. There are some gems in dirt which can cause diarrheal illnesses and possibly some toxins in dirt. If your child eats a lot of dirt or eats it frequently, contact your doctor. Otherwise, wash his/her hands and distract him/her with another activity.
Yes. It could mean your child is requiring nutritional supplements. Your doctor may screen for anemia.
Yes. Eating dirt could be a sign of iron deficiency or low iron deposit in his body, this is known as pica a simple blood test help to detect low hemoglobin or low iron deposit pediatrician may also check for lead pediatrician might prescribe iron supplements if needed.