When your health insurer reclassifies a prescription drug you take from tier 1 to tier 2, it can sharply increase the portion of the drug's cost that you're expected to pay. Roberto Machado Noa/LightRocket via Getty Images hide caption

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Parkinson's disease, smoking, certain head injuries and even normal aging can influence our sense of smell. But certain patterns of loss in the ability to identify odors seem pronounced in Alzheimer's, researchers say. CSA Images/Color Printstock Collection/Getty Images hide caption

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A Sniff Test For Alzheimer's Checks For The Ability To Identify Odors

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Four sheep cloned from the same genetic material as Dolly roam the paddocks in Nottingham, England. The University of Nottingham hide caption

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'Sister Clones' Of Dolly The Sheep Are Alive And Kicking

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New drugs like Harvoni effectively cure hepatitis C, but they haven't yet been approved for use in children. Lloyd Fox/Baltimore Sun/TNS via Getty Images hide caption

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Natalie Dunnege and her son, Strazh, work on an art project at home in San Francisco. Her health insurance would cover therapy sessions to help with her depression, Dunnege says, but she hasn't been able to find a counselor who is taking new patients. Sheraz Sadiq/KQED hide caption

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Single Mom's Search For Therapist Hampered By Insurance Companies

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Wen cleansing conditioners combine the functions of a shampoo and a conditioner. The FDA says it is investigating consumer complaints about the products. Jesse Grant/WireImage for Kari Feinstein PR/Getty Images hide caption

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Larry Smart, a Miami-Dade County mosquito control inspector, uses a fogger to spray pesticide to kill mosquitoes in an effort to stop a possible Zika outbreak in Miami. Joe Raedle/Getty Images hide caption

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Miami Steps Up Mosquito Control Efforts After Suspected Zika Cases

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Born This Way is produced by Jonathan Murray, the co-creator of MTV's Real World. Above, cast members Cristina Sanz (left), Rachel Osterbach, Steven Clark and Sean McElwee (top). Adam Taylor/A&E hide caption

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A Cast With Down Syndrome Brings Fresh Reality To Reality TV

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Invisibilia: How A Shirt Collar Helped A Man Survive Auschwitz

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Earlier studies have found that children who grow up in houses with a TV on many hours a day learn fewer words than children in households with less TV time. Heleen Sitter/Getty Images hide caption

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New Words With Quieter Background Chatter

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Indiana Gov. Mike Pence took questions from the media as he and his wife, Karen, left their New York hotel to meet with Republican presidential candidate Donald Trump on July 15. Pence has drawn criticism from the left and the right for various health care stances. Andres Kudacki/AP hide caption

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The physical therapy workouts a rehabilitation facility offers can be a crucial part of healing, doctors say. But a government study finds preventable harm — including bedsores and medication errors — occurring in some of those facilities, too. Andersen Ross/Blend Images/Getty Images hide caption

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Kathy Snook, Terri Anderson and Gary Snook traveled from Montana to Dr. Forest Tennant's office in West Covina, Calif. Corin Cates-Carney/Montana Public Radio hide caption

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A Broward County, Fla., employee takes water samples in a yard to test for mosquito larvae in June. It's part of the county's mosquito control program. Lynne Sladky/AP hide caption

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An anti-abortion demonstrator outside the U.S. Supreme Court in Washington, D.C., in March. Last month the high court struck down a Texas law that imposed tight regulations on abortion providers. Andrew Harrer/Bloomberg via Getty Images hide caption

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