Mammography has helped increase the early detection of breast tumors. Now, researchers say, the goal is to discern which of those tumors need aggressive treatment, including chemotherapy or radiation after surgery. Chicago Tribune/Getty Images hide caption

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Tumor Test Helps Identify Which Breast Cancers Don't Require Extra Treatment

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A change in guidelines for breast cancer surgery has resulted in fewer women having to undergo repeat surgeries. Martin J Cook/Getty Images hide caption

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Fewer Women Need To Undergo Repeat Surgery After Lumpectomy

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Researchers had participants wear the fitness trackers while walking or running on a treadmill and while riding an exercise bike to determine how well the trackers measured heart rate and energy expenditure. Paul Sakuma/Courtesy of Stanford University School of Medicine hide caption

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Paul Sakuma/Courtesy of Stanford University School of Medicine

Fitness Trackers: Good at Measuring Heart Rate, Not So Good At Measuring Calories

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Hannah Vanderkooy demonstrates the napping pod she uses at Las Cruces High School in Las Cruces, N.M. Joe Suarez for NPR hide caption

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Stressed-Out High Schoolers Advised To Try A Nap Pod

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Yo-Yo Dieting May Pose Serious Risks For Heart Patients

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Is It Time For Hearing Aids To Be Sold Over The Counter?

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A study suggests spinal manipulation can reduce lower back pain for some people. sanjagrujic/Getty Images/iStockphoto hide caption

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Spinal Manipulation Can Alleviate Back Pain, Study Concludes

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A new study finds that being overweight may decrease a person's life span. Zena Holloway/Getty Images hide caption

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Carrying Some Extra Pounds May Not Be Good After All

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Kathleen helps her son Gideon get his glasses on. Part of Gideon's brain was damaged during development, which effects his vision. Caitlin O'Hara for NPR hide caption

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Caitlin O'Hara for NPR

For Gideon, Infection With a Common Virus Caused Rare Birth Defects

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Even if you don't get an annual pelvic exam, every woman age 21 to 65 who has a cervix should get a Pap smear every three to five years, federal health officials advise. Tetra Images/Getty Images hide caption

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Are Routine Pelvic Exams A Must? Evidence Is Lacking, Task Force Says

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Models Are Still Pressured To Be Ultra-Thin, Survey Says

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Several new studies show mixed results for men taking testosterone supplements. Garo/Phanie/Passage/Getty Images hide caption

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Does Testosterone Improve Older Men's Health? It Depends

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Got Back Pain? Try Yoga Or Massage Before Reaching For The Pills

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Sixty-three percent of women who used the Paxman cooling device said they used wigs or head wraps to cover up hair loss, compared to 100 percent of women who didn't try cooling. Courtesy of Baylor College of Medicine hide caption

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Courtesy of Baylor College of Medicine

Cooling Cap May Limit Chemo Hair Loss In Women With Breast Cancer

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