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From Naked Mole Rats To Dog Testicles: A Writer Explores The Longevity Quest

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Closing loopholes in background checks for gun purchases would reduce the risk of death and injury, doctors' and attorneys' groups say. Alexa Miller/Getty Images hide caption

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Alexa Miller/Getty Images

An overgrowth of Clostridium difficile bacteria can inflame the colon with a life-threatening infection. Dr. David Phillips/Getty Images/Visuals Unlimited hide caption

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Dr. David Phillips/Getty Images/Visuals Unlimited

In a landmark new study, researchers found that babies who consumed the equivalent of about 4 heaping teaspoons of peanut butter each week, starting when they were between 4 and 11 months old, were about 80 percent less likely to develop a peanut allergy by age 5. To avoid a choking hazard, doctors say kids should be fed peanuts mixed in other foods, not peanuts or globs of peanut butter. Anna/Flickr hide caption

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Anna/Flickr

Feeding Babies Foods With Peanuts Appears To Prevent Allergies

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Maria Fabrizio for NPR

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

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Most parents have a favorite child, psychologists say, even if they try to be fair. Hero Images Inc./Corbis hide caption

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Hero Images Inc./Corbis

When Kids Think Parents Play Favorites, It Can Spell Trouble

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Vidhya Nagarajan for NPR

Kids, Allergies And A Possible Downside To Squeaky Clean Dishes

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