A 1950s poster from the National Dairy Council. Ads like these helped fuel the rise of cereal as a breakfast staple. David Pollack/Corbis via Getty Images hide caption

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Breakfast Backtrack: Maybe Skipping The Morning Meal Isn't So Bad

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Danny Cahill (left) won Season 8 of The Biggest Loser in 2009 by losing an amazing 239 pounds. He's pictured with at-home prize winner Rebecca Meyer. In the years since, Cahill has put back on more than 100 pounds, he told The New York Times. NBC via Getty Images hide caption

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'Biggest Loser' Lessons: Why The Body Makes It Hard To Keep Pounds Off

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Sleep Munchies: Why It's Harder To Resist Snacks When We're Tired

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Oprah Winfrey arrives at the 87th Academy Awards nominees luncheon at the Beverly Hilton Hotel on Monday, Feb. 2, 2015, in Beverly Hills, Calif. Jordan Strauss/Invision/AP hide caption

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Circadian Surprise: How Our Body Clocks Help Shape Our Waistlines

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Lots Of Seniors Are Overweight, But Few Use Free Counseling For It

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Woman weighing herself. ImageZoo/Corbis hide caption

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When Bariatric Surgery's Benefits Wane, This Procedure Can Help

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