Grapefruit can make for a tasty addition to breakfast. But it can also interfere with some medications. iStockphoto.com hide caption

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Currently, you need a doctor's prescription to purchase emergency contraception, such as Plan B, if you are under 17. AP hide caption

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A controversial pilot project reduced the cost of the most effective malaria drugs by giving manufacturers, such as Guilin Pharmaceutical in China, subsidies. Frederic J. Brown/AFP/Getty Images hide caption

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Blood samples dry during malaria screening. Public health workers call for more malaria testing in Africa to stop costly drugs from being handed out to kids with pneumonia. Paula Bronstein/Getty Images hide caption

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Dr. Esther Dalizu holds a pack of Coartem Malaria drugs in a pharmacy in Nairobi, Kenya, last year. Sayyid Azim/AP hide caption

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Under the microscope, Mycobacterium tuberculosis bacteria. The germs that cause TB have become resistant to many drugs. Janice Haney Carr/CDC hide caption

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Treatment For Alzheimer's Should Start Years Before Disease Sets In

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Álvaro Marín

Fun With Physics: How To Make Tiny Medicine Nanoballs

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Doctors may recommend that obese patients use weight-loss drugs to trick their hunger pangs. iStockphoto.com hide caption

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Two New Drugs May Help In Fight Against Obesity

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Andy Tranfaglia, 23, who has Fragile X syndrome, rides a horse with his mother, Katie Clapp. Katie Clapp hide caption

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Progress Made On Drug For Autism Symptoms

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