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Genetic Risk Factor For Testicular Cancer Discovered By Penn Researchers
Researchers at the University of Pennsylvania School of Medicine have uncovered variation around two genes that are associated with an increased risk of testicular cancer. Testicular cancer is the most common cancer among young men, and its incidence among non-Hispanic Caucasian men has doubled in the last 40 years -- it now affects seven out of 100,000 white men in the United States each year. The discovery, published in the May 31, 2009 online issue of Nature Genetics, is the first step toward understanding which men are at high risk of disease.
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Sexual Crimes: Narrow Window For Detection Of Knock-Out Drugs
Drug-facilitated sexual crimes are increasing. The Bonn Institute for Forensic Medicine has recorded that the number of examinations on the use of intoxicants in sexual offences within their catchment area increased 10-fold between 1997 and 2006. In the current edition of Deutsches Arzteblatt International, Burkhard Madea and Frank Musshoff present the modes of action and the detection windows for the most frequent substances (Dtsch Arztebl Int 2009; 106 (20): 341-347).
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New Target In Fight Against Osteoporosis, Periodontitis Identified By Dental Researchers
Osteoporosis and periodontitis are common diseases whose sufferers must cope with weakness, injury and reduced function as they lose bone more quickly than it is formed. While the mechanism of bone destruction in these diseases is understood, scientists have had less information about how bone formation is impaired.
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The Recommended 8 Hours Of Nightly Sleep Achieved By Less Than Half Of Older Americans

Older Americans with depressive symptoms and poor mental health tend to get seven hours of sleep per night or less, according to a research abstract that will be presented on Wednesday, June 10, at SLEEP 2009, the 23rd Annual Meeting of the Associated Professional Sleep Societies. Results indicate that 55 percent of the total study population reported sleeping on average for seven hours or less per night over the past month, and 61 percent reported a sleep-onset latency of 15 minutes or less. Older adults who were more educated, had higher household incomes, were black, reported more depressive symptoms, were more active, complained of difficulties maintaining sleep, and complained of "leg jerks" at night were the most likely to report more difficulty performing everyday functions as related to feeling sleepy or tired. According to lead author Karen Rose, PhD, at the University of Virginia in Charlottesville, older adults who were unmarried, black and who reported having more difficulties with initiating or maintaining sleep had statistically greater odds of having a shortened sleep duration. People who reported depressive symptoms were also more likely to have short sleep durations. "We were surprised by the fact that the self-reported amount of physical activity did not predict functional outcomes of sleep. We anticipated that people who reported lower levels of physical activity would have more difficulty with sleep-related functional outcomes," said Rose. "We were also surprised to find that reported numbers of hours slept each night did not predict whether or not an individual experienced poor functional outcomes as a result of being sleepy or tired." The study involved data from 1,570 men and women who were 60 years of age or older, who had completed telephone or in-home surveys. Of the total sample, 61 percent were non-Hispanic white, 20.4 percent were non-Hispanic black, and 15 percent were Mexican-Americans. A diagnosis of sleep apnea was reported by 5.4 percent of participants, 18 percent reported feeling "unrested during the day" as "often" or "almost always," and 11 percent reported frequent use of sleeping pills. According to authors of the study, short sleep duration is a serious concern for older adults, as it has been associated with cardiovascular disease, insulin resistance, and an increased risk for falling in this demographic. For more information on sleep and aging, visit: http://www.sleepeducation.com/Topic.aspx?id=30 Abstract Title: Prevalence of Sleep Disturbances and Related Symptoms in a National, Community Sample of Older Adults Presentation Date: Wednesday, June 10 Category: Aging Abstract ID: 0373 Kelly Wagner American Academy of Sleep Medicine


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