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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The San Francisco-based startup CellScope has built a tool to do ear exams at home, instead of going to the doctor. Cellscope hide caption

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Self-Tracking Gadgets That Play Doctor Abound At CES

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Reid Kennedy, materials manager at San Francisco General Hospital, stands next to racks of saline solution. He has had to carefully manage the hospital's supply of saline during this shortage. Mark Andrew Boyer/KQED hide caption

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Shortage Of Saline Solution Has Hospitals On Edge

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That Prescription Might Not Have Been Tested For Your Ailment

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Candy-flavored cigars like these in a shop in Albany, N.Y., are the focus of efforts to restrict sales of sweet-flavored tobacco. Hans Pennink/Associated Press hide caption

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Sweet Cigarillos And Cigars Lure Youths To Tobacco, Critics Say

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How many calories in that bite? My Fitness Pal and other fitness and nutrition apps can help find the answer. Heather Rousseau/NPR hide caption

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Patients Lead The Way As Medicine Grapples With Apps

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Bad bug: The bacterium Clostridium difficile kills 14,000 people in the United States each year. Janice Carr/CDC/dapd hide caption

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Palestinians unload bags of flour donated by USAID, or the United States Agency for International Development, at a depot in the West Bank village of Anin in 2008. Mohammed Ballas/AP hide caption

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