Experts say lots of factors determine how quickly an oil deteriorates — from the variety of the olives, to how the oil is produced and stored. Matthias Schrader/AP hide caption

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To Get The Benefits Of Olive Oil, Fresh May Be Best

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Goodbye, Sodas. McDonald's says it will now market and promote Happy Meals only with milk, water or juice. Bill Parrish Photography/PR Newswire/AP hide caption

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About 40 years ago wheat breeders introduced new varieties of wheat that helped farmers increase their grain yields. But scientists say those varieties aren't linked to the rise in celiac disease. Karen Bleier/AFP/Getty Images hide caption

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Doctors Say Changes In Wheat Do Not Explain Rise Of Celiac Disease

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If you eat fish, rather than take a fish-oil supplement, is there more likely to be a benefit? There's more than a suggestion that this is indeed the case. Verena J Matthew/iStockphoto hide caption

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Johanna Terron, 14, has lost over 20 pounds over the past year. She receives a prescription for fruits and vegetables from her pediatrician at Lincoln Hospital. Allison Aubrey/NPR hide caption

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No Bitter Pill: Doctors Prescribe Fruits And Veggies

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SafetyTat, the inventor of children's safety tattoos, offers a line of allergy tattoos to help children with food allergies. Courtesy of SafetyTat hide caption

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The heirloom corn variety has only eight rows of kernels and hence, its name: New England Eight Row Flint. Courtesy of Stone Barns Center for Food & Agriculture hide caption

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Reviving An Heirloom Corn That Packs More Flavor And Nutrition

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Instead of throwing out the nutritious broth that's left over when you cook down greens, why not use it as the base for a delicious dish like this rockfish with clams in a garlic-shallot pot liquor sauce? Alison Aubrey/NPR hide caption

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CDC Reports Dip In Obesity Rates Among Some PreSchoolers

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Small declines in obesity among young kids could help stem bigger problems in the future. Ocean/Corbis hide caption

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Falling Obesity Rates Among Preschoolers Mark Healthful Trend

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People following a 5-2 diet would eat lean protein and non-starchy vegetables two days a week. Heather Rousseau/NPR hide caption

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Two-Day Diets: How Mini Fasts Can Help Maximize Weight Loss

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Much of the palm oil imported into the U.S. ends up in snack foods such as cookies, crackers and microwave popcorn. Heather Rousseau/NPR hide caption

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Palm Oil In The Food Supply: What You Should Know

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