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SAN DIEGO, Dec. 18 (UPI) -- Female facial beauty may be a matter of cognitive averaging, U.S. and Canadian researchers say.

LOS ANGELES, Dec. 18 (UPI) -- Transmission of H1N1 among passengers during a trans-Atlantic airline flight could be fairly high, U.S. researchers said.

BETHESDA, Md., Dec. 18 (UPI) -- Deficiencies in omega-3 fatty acids may be a factor in mental illnesses, U.S. researchers suggest.

NEW YORK, Dec. 18 (UPI) -- New York officials say they are considering requiring city restaurants to post their grades of A, B or C based on their most recent sanitary inspection grade.

ROCHESTER, N.Y., Dec. 18 (UPI) -- Avid video game players get faster not only on their game of choice, but on a variety of unrelated laboratory tests of reaction time, U.S. researchers say.

UPPSALA, Sweden, Dec. 17 (UPI) -- A group of drugs used to treat heart failure shows promise for fighting colon cancer, researchers in Sweden said.

ATLANTA, Dec. 17 (UPI) -- Two state health departments identified a life-threatening condition that compromises the immune system among persons using cocaine, U.S. officials said.

PARIS, Dec. 17 (UPI) -- Beaches may be a reservoir of the pathogen E.coli as a result of migratory bird droppings, researchers in France and Portugal say.

MINNEAPOLIS, Mich., Dec. 17 (UPI) -- U.S. and Belgian industrial psychologists say personality tests can predict the success of medical school applicants.

LONDON, Dec. 17 (UPI) -- There is a type of "war of the roses" being waged in some British hospitals, with some staff determined to rid patients' rooms of flowers, researchers say.

NEW YORK, Dec. 17 (UPI) -- Tap water may be legally safe but in reality could pose serious health risks because the 35-year-old federal law regulating it is out of date, scientists say.

SKOKIE, Ill., Dec. 15 (UPI) -- Sometimes it's hard to tell whether you're tackling parenthood in the 21st century -- or being tackled by it. This is the latest in a series of reflections by UPI writers.

CHICAGO, Dec. 17 (UPI) -- A U.S. pediatrician says no matter the season, injuries related to the choice of the wrong toy are not accidental.

CLEVELAND, Dec. 17 (UPI) -- A U.S. pediatrician advises veering away from videos when giving gifts to small children.

VAN NUYS, Calif., Dec. 17 (UPI) -- A U.S. veterinarian says despite conventional wisdom, it is possible to teach an old dog new tricks.

BOSTON, Dec. 17 (UPI) -- Holiday decorations -- particularly glass ornaments -- are one more safety hazard parents must consider during the season, a U.S. physician says.

NEW YORK, Dec. 17 (UPI) -- More than 90 percent of those with gum disease may be at risk for diabetes, U.S. researchers say.

WASHINGTON, Dec. 16 (UPI) -- Insurance exchanges proposed in the U.S. Senate health reform bill are likely to fail as currently structured, a non-profit group said.

WASHINGTON, Dec. 16 (UPI) -- A panel of the U.S. Food and Drug Administration voted to recommend the cholesterol lowering drug Crestor be approved for those with inflammation.

WEST LAFAYETTE, Ind., Dec. 16 (UPI) -- A U.S. researcher says college students could earn higher grades if they self-tested themselves on coursework before taking a test.