David Ozanich smoked outside the Live Bait bar in New York City in April 2003, a few months after a ban on smoking in bars and restaurants took effect. Diane Bondareff/AP hide caption

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In Washington's Columbia Heights neighborhood, Claire Robertson, a grad student, talks with Scott Hensley about retail health clinics. David Schultz/NPR hide caption

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Radiation therapist Jean Etienne holds a range compensator, which shapes the depth to which the proton beam enters a patient's body to target a tumor. Rebecca Davis/NPR hide caption

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Red clover sprouts are pretty, but they and other sprouts have been linked to too much foodborne illness for major grocers to continue carrying them. Stephanie Phillips/iStockphoto.com hide caption

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The co-author of a controversial study on diet soda's link to blood cancers says his results fall into a gray zone between a clear relationship and no relationship at all. iStockphoto.com hide caption

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Dr. Joel Policzer checks on his patient, Lillian Landry, in the hospice wing of an Florida hospital in 2009. A new study found that many terminally ill cancer patients don't fully understand their prognosis. J. Pat Carter/AP hide caption

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The use of multiple blood pressure medications may be helping some Americans bring their hypertension under control. iStockphoto.com hide caption

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Parents now have more advice to consider when it comes to choosing organic foods. Here, Theo Shriver, 6, weighs organic produce at the Puget Consumers Co-op in Seattle. Elaine Thompson/AP hide caption

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Inglewood High School cheerleaders perform in front of the Space Shuttle Endeavour as it is transported through the streets of Inglewood and Los Angeles on October 13. ROBYN BECK/AFP/Getty Images hide caption

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Drinking diet soda and other low-calorie drinks may help you manage weight, but experts say plain old H2O is still the best way to go. Justin Sullivan/Getty Images hide caption

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