The stars of Divergent as well as The Fault in Our Stars, Shailene Woodley, have appeared publicly as a person who eats clay. The 22-year-old, a former pupil of Gwyneth Paltrow and a collector of water from the fresh rivers of the mountains, told David Letterman how she consumes clay in a detoxifying diet. "Clay binds to other materials in your body and helps your body excrete those materials that aren't necessarily the best for you," she claims.
In an interview for the blog Into The Gloss, she went into more detail: "My friend started eating it and the next day she called me and said: 'Dude, my shit smells like metal!' She was really worried, but we did some research together and everything said that when you first start eating clay your bowel movements, pees, and even you, yourself, will smell like metal."