These fiber-rich foods altogether offer about 28.5 grams, or a woman's daily recommended intake. Clockwise from top left: one pear, 6 grams of fiber; medium artichoke, 7 grams; 1 ounce of popcorn, 3.5 grams; 1 medium sweet potato, 4 grams; 1 cup edamame, 8 grams. Morgan McCloy/NPR hide caption

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Exposure to visual food cues like food ads can influence eating behavior and contribute to weight gain, a study published in the journal Obesity Reviews found. Nick Amoscato/Flickr hide caption

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The Super Food Express bus travels to schools in Mobile County, Ala., to ensure children are fed healthy meals when school is out of session. The bus is part of the USDA's summer food program, which President Obama says needs additional funding. USDA/Flickr hide caption

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Dole has voluntarily withdrawn from the market all of its Dole-branded and private label packaged salads processed at a Springfield, Ohio plant because the plant has been linked to a Listeria outbreak. iStockphoto hide caption

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The routines that students learn at Dance for PD classes in Venice, Calif., can be quite challenging, instructors say. Courtesy of Joe Lambie and Laura Karlin hide caption

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Studies show that kids' household income seems to be a more important predictor of their risk of becoming overweight and obese than their race or ethnicity. Raleigh News & Observer/MCT via Getty Images hide caption

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Teela Magar and Cing Neam prepare the roti dough as part of Edible Alphabet, a program in Philadelphia that folds English lessons for new immigrants to the U.S. into a cooking class. Students also learn about seasonality and healthful eating on a budget. Bastiaan Slabbers hide caption

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Democratic presidential hopeful Hillary Clinton walks past the peppers at the El Rey grocery store in Milwaukee, Wis., during a campaign stop in 2008. Clinton tells NPR that she eats a fresh hot pepper a day to stay healthy on the campaign trail. She may be on to something. Carolyn Kaster/AP hide caption

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Students at Doherty Middle School in Andover, Mass., choose items from the salad bar in the school cafeteria, June 2012. Among other things, a Senate compromise on school nutrition standards calls for the USDA and the CDC to establish new guidance that would encourage the use of salad bars. Melanie Stetson Freeman/The Christian Science Monitor/Getty hide caption

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A mock-up of a warning label for sodas and sugary drinks proposed in California by public health advocates in 2015. California Center for Public Health Advocacy hide caption

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Lower-back pain is one of the top three reasons that Americans go to the doctor. But the solution can be a DIY project. iStockphoto hide caption

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The MyPlate icon is the visual centerpiece of the USDA's advice for healthy eating aimed at the general public. Scientists and other public health advocates had called for adding a water symbol to the icon, but that didn't happen. USDA hide caption

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Extra-high amounts of sodium can be hidden in savory snacks like popcorn served at movie theaters and other concession stands. Scott Olson/Getty Images hide caption

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Eat This, Not That: The U.S. government's latest Dietary Guidelines call on Americans to eat more vegetables and fruits, more seafood and whole grains, and to cool it on foods high in sugar, refined grains, sodium and saturated fats. Morgan McCloy/NPR hide caption

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