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Cougars’ Diverse Diet Helped Them Survive Pleistocene Mass Extinction

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Cougars may have survived the mass extinction that took place about 12,000 years ago because they were not particular about what they ate, unlike their more finicky cousins the saber-tooth cat and American lion who perished, according a new analysis of the microscopic wear marks on the teeth of fossil cougars, saber-tooth cats and American lions.

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EMBARGOED

A reporter's PressPass is required to access this story until the embargo expires on 4/24/2014 12:00 PM EDT

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Pain Curbs Sex Drive in Female Mice, but Not in Males

A study published in the April 23 issue of The Journal of Neuroscience found that pain from inflammation greatly reduced sexual motivation in female mice in heat -- but had no such effect on male mice.

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Igor Grant Named Chair of UC San Diego Department of Psychiatry

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Igor Grant, MD, FRCP(C), an internationally recognized neuropsychiatrist, whose research interests have ranged from the neurobiology of HIV/AIDS and substance abuse, psychobiology of stress, to the therapeutic potential of medicinal cannabis, has been named the new Chair of the Department of Psychiatry at the University of California, San Diego School of Medicine.

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Insurance Status Affects Where Young Adults Seek Health Care

Perhaps due to lack of or inconsistent insurance coverage, young adults age 18 to 25 tend to go to the doctor’s office less often than children or adolescents, yet have higher rates of emergency room use, finds a study in the Journal of Adolescent Health.

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Spring Cleaning: A Sneezing Nightmare for Allergy Sufferers

The warm weather brings the urge to open the windows and start cleaning out the closets, but for allergy suffers the spring cleaning bug can be miserable.

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Social and Behavioral Sciences

Promising U.Va. Youth Development Researchers Win Major Research Support

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Noelle Hurd studies the mentoring relationships of economically disadvantaged African-American adolescents, while Joanna Lee Williams is probing diverse middle-school peer groups. Both were named Grant Foundation Scholars.

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New Heart Assist Pump Allows Minimally Invasive Approach

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Sometimes smaller is better. This is especially true of left ventricular assist devices, the mechanically operated heart pumps that are implanted in heart failure patients to bridge them to transplantation.

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Stroke Treatment, Outcomes Improve at Hospitals Participating in UCLA-Led Initiative

A study demonstrated that hospitals participating in a national quality-improvement program have markedly increased the speed with which they treat stroke patients with the clot-busting drug. This speedier treatment was accompanied by reduced mortality, fewer treatment complications and a greater likelihood that patients would go home after leaving the hospital instead of being referred to a skilled nursing facility.

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New Drugs Offer Hope for Migraine Prevention

Two new studies may offer hope for people with migraine. The two studies released today will be presented at the American Academy of Neurology’s 66th Annual Meeting in Philadelphia, April 26 to May 3, 2014.

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