Brett quit smoking four years ago, well after losing most of his teeth. By his mid-30s, gum disease from tobacco smoking had ravaged the bones and tissue supporting his teeth -- 16 removed in one surgery. At 42, nearly toothless, Brett still smoked. He soberly looks at the viewer in a new “scared straight” television ad as he shares his story, hoping smokers will take heed and quit. “My tip to you is, your smile says a lot about you,” says the New Mexico resident, who pauses to laboriously remove his fake teeth. He opens wide, displaying the void. "What does this say about you?" His discomfiting ordeal is part of the latest batch of “you can do it” ads in a campaign featuring ex-smokers sharing their smoking-related health traumas. Produced by the federal Centers for Disease Control and Prevention, the gripping online, radio and TV spots offer an 800-QUITNOW phone line and practical get-started advice, plus other support to stop smoking.