my two year old daughter eats and licks chalk when she can get her hands on it! i would like to know why she does this we take it away from her for a while and then we give it back when she wants to draw again then she eats it again! she is on a medication for seizures and i was thinkin maybe that might be a factor but im clueless should i take her somewhere? does anyone elses kids eat chalk? she also enjoys dust and occasional bit of dirt,grit,mud etc????