Nonprofits are looking to help people sign up for insurance coverage in Florida. iStockphoto.com hide caption

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Assisters get up to speed on how best to explain the new health coverage choices during training on Sept. 25 at the Omni Shoreham Hotel in Washington, D.C. Morgan Walker/NPR hide caption

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Stressed out? Who isn't? Stress can cause physical changes in the brain that may be linked to Alzheimer's. iStockphoto.com hide caption

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Stephanie Groover of Independence Blue Cross provides information about coverage to commuters in Philadelphia on the opening day of the health insurance exchanges. Matt Rourke/AP hide caption

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Health care delivery is expected to change, with more care provided by nurse practitioners and fewer people having a doctor for life. Images.com/Corbis hide caption

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U.S. House Majority Leader Rep. Eric Cantor (center) and colleagues gather before a Sunday vote on Capitol Hill. The House passed two new provisions to a federal spending bill to delay Obamacare for a year and to repeal the medical device tax. Alex Wong/Getty Images hide caption

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A student gets vaccinated against pertussis at a Los Angeles middle school in 2012. The state required that students be immunized to halt an epidemic of whooping cough. Kevork Djansezian/Getty Images hide caption

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No envelope backs required for this health care calculation. iStockphoto.com hide caption

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The audience concentrates on a presentation by Kansas Insurance Commissioner Sandy Praeger's office about the federal health care overhaul at the University of Kansas satellite campus in Overland Park, Kan., earlier this month. John Hanna/AP hide caption

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Kombucha made by artisan tea brewer Bill Bond in Akron, Ohio, comes in an array of flavors, such as lemongrass, ginger, blueberry and watermelon. Peggy Turbett/The Plain Dealer /Landov hide caption

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