Detailed text transcripts for TV channel - KGO - 20140508:09:26:00
Letterman a truly all natural approach to her diet. >> clay binds to other material in your body and helps your body excrete those materials. that are not necessarily the best for you. >> reporter: but even she jokes about how up conventional the idea seems. >> i make my toothpaste out of it. so i get my clay when -- >> so you brush your teeth with clay. >> yes. >> now that's not a problem. >> reporter: it's not unheard of. eating clay is a tradition practiced all over the world and some doctors say consuming it in moderation may help with digestive issues and anemia. >> it's called geophasia....
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