Making up sleep during the day didn't reduce the risk that kids in the study would gain weight. Jacquelyn Martin/AP hide caption

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In Young Kids, Lack Of Sleep Linked To Obesity Later

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For women who carry certain genes, getting a double mastectomy before anything shows up on a mammogram may reduce breast and ovarian cancer risk. Damian Dovarganes/AP hide caption

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Breast Removal Reduces Cancer Risk In Some Women

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CDC: Teen Vaccination Rates Rising

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Study: Hearing Loss Increases In U.S. Teens

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"I still have, on some days, a wonderful relationship with my daughter," Taryn Cregon says of Zoe, 13. "But it goes from this really back-and-forth, loving relationship to almost seeming like that person looks at you like you're enemy No. 1." Courtesy of Taryn Cregon hide caption

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Experiencing Teen Drama Overload? Blame Biology

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CDC: Obesity Is A "Major Public Health Threat"

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A group of teenagers take a morning jog at the Wellspring Academy in Reedley, Calif., in 2009. The school specializes in helping teens and college students lose weight. A new study shows teens who remain obese risk a lifetime of chronic health problems and poverty. Justin Sullivan/Getty Images hide caption

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Impact Of Childhood Obesity Goes Beyond Health

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This tiny telescope gets implanted in one eye and magnifies the image to make up for "holes" in the person's vision. It can greatly improve sight for some people with age-related macular degeneration. Courtesy VisionCare Ophthalmic Technologies hide caption

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Tiny Eye Telescope Brings Back A World Of Sight

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Experts Seek Early Cholesterol Tests For All Kids

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Actor Jonathan Haze bicycles at the Cardiac Rehab Lab at Cedars-Sinai Heart Institute. Exercise physiologist Asako Oshiro takes his blood pressure while he’s pumping. Patti Neighmond/NPR hide caption

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Can You Be Fat And Fit? More Health Experts Say Yes

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A recent study found melanoma risk increased as much as three times among people who tanned more than 50 hours in their lifetime, or had more than 100 sessions in a tanning booth. iStockphoto.com hide caption

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That Not-So-Healthy Glow: The Dangers Of Tanning

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Study: Tanning Beds Substantially Raise Skin Cancer Risks

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