Vitamin E has been associated with increased risk of death in some studies, but it may also delay cognitive decline in Alzheimer's disease. iStockphoto hide caption

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Almost half of high-schoolers have had sexual intercourse, but teens almost never ask their doctors about sexual health. Nicole Young/iStockphoto hide caption

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Studies suggest cinnamon can help control blood sugar, but if you want to incorporate more of this spice in your diet, consider using the Ceylon variety. iStockphoto hide caption

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Timothy Webb and other advocates protest the cost of HIV drugs manufactured by the pharmaceutical company Gilead outside an AIDS conference in Atlanta in March. Gilead is making a new hepatitis C drug, Sovaldi. John Amis/AP Images for AIDS Healthcare Foundation hide caption

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Texas state Sen. Wendy Davis filibustered for 11 hours against sweeping restrictions on abortion back in June, becoming a hero for abortion rights activists. Eric Gay/AP hide caption

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Researchers have only recently been able to use brain scans to detect Alzheimer's risk factors in living people. iStockphoto hide caption

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Having a perfect memory can put a strain on relationships, because every slight is remembered. Katherine Streeter for NPR hide caption

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Protesters demonstrate at a McDonald's in New York on Dec. 5. Protesters staged events in cities nationwide, demanding a pay raise to $15 per hour for fast-food workers and the right for them to unionize. John Moore/Getty Images hide caption

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The skull of a female Neanderthal, who lived about 50,000 years ago, is displayed at the Natural History Museum in London. Rick Findler/Barcroft Media/Landov hide caption

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Ah, the cinnamon swirl: They're beloved by the Danish, but the traditional recipe for these pastries may be too spice-laden for European Union law. iStockphoto.com hide caption

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There's data to support the notion that pot, or a drug based on its active ingredient, could help ease the fears of PTSD. Ted S. Warren/AP hide caption

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Martine Rothblatt, CEO of United Therapeutics, is the namesake of the company's latest drug, Orenitram. Ron Levine/Getty Images hide caption

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