Patients wait in line at Nuestra Clinica Del Valle in San Juan, Texas, in September 2012 file photo. A study released on Wednesday finds that immigrants, particularly noncitizens, heavily subsidize Medicare, and that policies that restrict immigration may deplete Medicare's financial resources. Eric Gay/AP hide caption

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Eric Gay/AP

A dental researcher says he's concerned that excessive soda consumption is leading to severe erosion of teeth. iStockphoto.com hide caption

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iStockphoto.com

To fight antibiotic-resistant staph germs like these, a study suggests disinfecting the skin of all intensive care patients. Janice Carr/CDC hide caption

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Janice Carr/CDC

Angelina Jolie's decision to have a double mastectomy after genetic testing has prompted a discussion about which other tests should be covered. WPA Pool/Getty Images hide caption

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WPA Pool/Getty Images

Evidence is growing that bariatic surgery reduces health risks of obesity. Life in View/Science Source hide caption

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Life in View/Science Source

For Many, Affordable Care Act Won't Cover Bariatric Surgery

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Going to the doctor may be uncomfortable for people who are worried about weight. iStockphoto.com hide caption

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iStockphoto.com

Overweight People Are More Apt To Ditch Doctors

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Studies Question Potential Alzheimer's Treatment

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The origin of itch has confounded scientists for decades. Oktay Ortakcioglu/iStockphoto.com hide caption

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Oktay Ortakcioglu/iStockphoto.com

Why You Have To Scratch That Itch

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Floodwaters from Superstorm Sandy destroyed the first floor of this house in Staten Island, New York. Most of the people who drowned during the storm died in their homes in low-lying areas of New York and New Jersey. Paul J. Richards/AFP/Getty Images hide caption

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Paul J. Richards/AFP/Getty Images

Canned peaches can pack as many, or in some cases, more nutrients than fresh ones, research suggests. But be sure to skip the added syrup. Matthew Staver/Bloomberg via Getty Images hide caption

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Matthew Staver/Bloomberg via Getty Images