Garrett shares a moment with his mother, Natalie Peterson. "He has been doing so good," she says. "He's been smiling." Nicole Haley/University of Michigan Health System hide caption

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Doctors Use 3-D Printing To Help A Baby Breathe

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C. Nash smokes after possession of marijuana became legal in Washington state on Dec. 6, 2012. Ted S. Warren/AP hide caption

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Evidence On Marijuana's Health Effects Is Hazy At Best

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Virginia Rady, 28, holds her old nebulizer at her home in Dallas. Rady was diagnosed with chronic persistent asthma at age 2. She underwent a series of three outpatient surgeries between December 2012 and February 2013 for a procedure known as bronchial thermoplasty. She says the procedure has changed her life, allowing her to remove her nebulizer from her bedside. Brandon Thibodeaux for NPR hide caption

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New Heat Treatment Has Changed Lives For Some With Severe Asthma

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Alice Snyder, with her parents Mary and Ryan, during a checkup with Dr. John Herzenberg, who treated her clubfoot without surgery. Jenny Gold/Kaiser Health News hide caption

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How Parents And The Internet Transformed Clubfoot Treatment

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The chemicals in home wart-freezing treatments are flammable, the Food and Drug Administration warns. Courtesy of FDA hide caption

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Janet Wertheimer does a back hyperextension exercise at Boston Sports Club in Wellesley, Mass. Regular exercise has helped control her chronic back pain. Ellen Webber for NPR hide caption

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Pain In The Back? Exercise May Help You Learn Not To Feel It

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Say hello to your microbiome, Rob Stein. Our intrepid correspondent decided to get his gut bacteria analyzed. Now he's wondering if he needs to eat more garlic and onions. Morgan Walker/NPR hide caption

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Getting Your Microbes Analyzed Raises Big Privacy Issues

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Clostridium difficile, a bacterium that causes severe diarrhea, can be difficult to treat with antibiotics. Stefan Hyman/University of Leicester hide caption

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