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For all the good aspirin can do in preventing second heart attacks and strokes, taking it daily can boost some risks, too — of ulcers, for example, and of bleeding in the brain or gut. iStockphoto hide caption

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Maybe You Should Rethink That Daily Aspirin

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Volunteers search for needles and other drug paraphernalia along Church Street in Austin, Ind., in April. The region has recorded 142 new HIV cases since December, according to the state, in an outbreak tied to injected-opioid use. Seth Herald/Nurphoto/Corbis hide caption

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Seth Herald/Nurphoto/Corbis

CDC Warns More HIV, Hepatitis C Outbreaks Likely Among Drug Users

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A color-enhanced cerebral MRI showing a glioma tumor. Scott Camazine/Science Source hide caption

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Scott Camazine/Science Source

Thoughts Can Fuel Some Deadly Brain Cancers

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Critics Lash Out At Chinese Scientists Who Edited DNA In Human Embryos

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A honeybee forages for nectar and pollen from an oilseed rape flower. Albin Andersson/Nature hide caption

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Albin Andersson/Nature

Buzz Over Bee Health: New Pesticide Studies Rev Up Controversy

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Mmm. Smells just like your identical twin. iStockphoto hide caption

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Why Do Mosquitoes Like To Bite You Best? It's In Your Genes

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Science-based guidelines say there's no benefit to getting an EKG of heart activity before routine cataract surgery — even if the patient is old. But most doctors order such tests anyway. Bull's Eye/ImageZoo/Corbis hide caption

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Bull's Eye/ImageZoo/Corbis

Why Many Doctors Don't Follow 'Best Practices'

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Screening Tests For Breast Cancer Genes Just Got Cheaper

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3-D Printers Are Changing The Way People Think About Manufacturing

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Why Handsome Men May Be At A Disadvantage When It Comes To Hiring

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Gazing Into Those Puppy-Dog Eyes May Actually Be Good For You

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Setting The Record Straight On The Phrase 'Gateway Drug'

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