They’re driven to eat chalk, baby powder or cigarette ashes. It’s called pica – and it’s more common than you know. Dr. Oz talks to 2 women suffering from the disorder and investigates the serious bodily harm they’re causing. Could someone you know secretly be suffering from this?

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Click here to watch Part 3. 

Click here to watch Part 4. 

Click here to watch Part 5. 

Note: Volunteer services for Saneika James' pica treatment will be provided by Melainie Rogers, founder of BALANCE Eating Disorder Treatment Center.

Want to know how to look marvelous without splurging so much? Dr. Oz invites three beauty experts to share the smartest ways to save money while looking fabulous starting from your hair and makeup tools to the beauty products you use.