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A color-enhanced scanning electron micrograph of the surface of the human tongue. Taste buds are shown in purple. Doctors have known that as people pack on the pounds, their sense of taste diminishes. New research in mice suggests one reason why: Inflammation brought on by obesity may be killing taste buds. Omikron Omikron/Getty Images/Science Source hide caption

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Omikron Omikron/Getty Images/Science Source

Enoki mushrooms have been used in Eastern medicine for hundreds of years and are now being studied for their anti-tumor properties. Mary Shattock/Flickr hide caption

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Mary Shattock/Flickr

Mushrooms Are Good For You, But Are They Medicine?

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The challenge comes at a time when many Americans are cutting back on sugar due to obesity and diabetes risks. Courtesy of The Coca-Cola Company hide caption

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Courtesy of The Coca-Cola Company

Coca-Cola Offers A Sweet Quest: A Million Bucks To Replace Sugar

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Yo-Yo Dieting May Pose Serious Risks For Heart Patients

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A family sells pastries in Mexico City. As Mexicans' wages have risen, their average daily intake of calories has soared. Meghan Dhaliwal/for NPR hide caption

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Meghan Dhaliwal/for NPR

How Diabetes Got To Be The No. 1 Killer In Mexico

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A new study finds that being overweight may decrease a person's life span. Zena Holloway/Getty Images hide caption

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Zena Holloway/Getty Images

Carrying Some Extra Pounds May Not Be Good After All

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An increasing number of overweight Americans have lost the motivation to diet. enisaksoy/Getty Images hide caption

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enisaksoy/Getty Images

Is Dieting Passe? Study Finds Fewer Overweight People Try To Lose Weight

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