#AskTheExpert My son keeps eating the mud and sand, mostly licks them not able to control him tried different ways to control him but not able to control him.

A. Most cases of pica happen in young children and pregnant women. It's normal for kids up to 2 years old to put things in their mouth. So the behavior isn't usually considered a disorder unless a child is older than 2. Pica usually improves as kids get older.