I'm 20 Years old female I used to ate more slate pencil from 6 years I was addicted to slate pencils. I want to stop this habit permanently. Tell some solution one doctor told me it is bcz of lack of calcium and multivitamin. But how can I gain calcium and multivitamin to stop this habit permanently. If one day I stop to eat slate pencil. I feel more uncomfortable. And from 6 years I was ated so I have a fear is there any problem it will create to my body. So kindly give me a permanent and perfect solution for this habit doctor. Thanking you.