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SCIENCE IN THE NEWS DAILY

"Good" HDL Cholesterol May Not Protect Heart After All, Study Suggests

from CBS News

We've heard it all before: There's "good" cholesterol, called high-density lipoprotein (HDL), that provides protective benefits against heart attacks and then there's "bad" LDL cholesterol, which raises risk for heart problems in high levels.

A new study finds that HDL cholesterol might not boost your heart health as doctors once thought.

The study looked at the genes of about 170,000 individuals, looking for variations in DNA that earlier research shows naturally raise HDL levels in those who possess them. After looking for these 15 genetic variations--called single nucleotide polymorphisms (SNPs)--in the participants, the researchers discovered none of these variations actually reduced their risks for having a heart attack, compared with people who didn't have the variations.

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Latest Multimedia

VIDEO: The Promise and Peril of Drones

CummingsDrones

The automation of tasks at work and at home is just around the corner, including driving cars, piloting planes, delivering packages, and transporting weapons. Unmanned aerial vehicles are rapidly evolving to meet both society’s and the military’s needs in automation and better efficiency.
During her time as one of the first female fighter pilots in the US Navy, Dr. Missy Cummings observed that computers could take off and land a plane more precisely than humans. Because of this breakthrough and her fascination with this growing technology, she began human–drone interaction research.

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