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Women, men respond differently to stress MONTREAL (UPI) -- Women who are more defensive are at increased cardiovascular risk, whereas low defensiveness appears to damage the health of older men, U.S. researchers say. Researchers at the Universite de Montreal, the Montreal Heart Institute in collaboration with colleagues from the Universite du Quebec a Montreal and McGill University said defensiveness is a trait characterized by avoidance, denial or repression of information perceived as threatening. In women, a strong defensive reaction to judgment from others or a threat to self-esteem will result in high blood pressure and heart rate, the researchers said. Bianca D'Antono, a professor at the Universite de Montreal and a Montreal Heart Institute, said contrarily, older men with low defensive reactions have higher cardiovascular rates. "Our findings suggest that socialization is innate and that belonging to a group contributed to the survival of our ancestors," D'Antono said in a statement. "Today, it is possible that most people view social exclusion as a threat to their existence. A strong defensive reaction is useful to maintain one's self-esteem faced with this potential threat." The findings are published in the journal Psychophysiology. Copyright 2010 by United Press International
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Insight offered into veterinarian suicides SOUTHAMPTON, England (UPI) -- A researcher in Southampton, England, said high stress may be partially to blame for the alarming suicide rate among the country's veterinarians. Dr. David Bartram, a student at the University of Southampton's School of Medicine, suggested in a recent article that veterinarians in England endure stress during their education and then move into working environments rife with a number of stressful elements, CNN reported Friday. Bartram said figures indicate as many as six of the country's 16,000 veterinarians are likely to commit suicide each year. The suicide rate among the profession appears to be four times the suicide rate of the general public. CNN said Bartram also suggests suicide may be seen as an acceptable option by some veterinarians because of their use of euthanasia to alleviate the suffering of their animal clients. Bartram, who is a veterinarian, said despite the alarming suicide rate in his profession, there has been little research on the issue. "It does seem quite remarkable that there has been such a dearth of research in the field," he said in his article, published in the journal "Veterinary Record." Copyright 2010 by United Press International
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Optimism boosts the immune system LOUISVILLE, Ky. (UPI) -- Feeling better about the future -- being optimistic -- might boost the immune system, U.S. researchers suggest. Psychological scientists Suzanne Segerstrom of the University of Kentucky and Sandra Sephton of the University of Louisville recruited first-year law students by sending them a packet during the summer before classes started. The 124 students who participated in the research were studied five times over six months. Then they were injected with material that should summon an immune response and two days later, they came back to have the injection site measured. A larger bump in the skin means a stronger immune response. This test only measured the strength of the part that is responsible for fighting viral infections and some bacterial infections, the researchers said. The students' general outlook on life -- whether they had an optimistic disposition -- didn't account for the differences in immune responses between students. But as each student's expectations about law school waxed and waned, their immune response followed along, the study said. At more optimistic times, they'd have bigger immune responses; at a more pessimistic time, a more sluggish immune response, the researchers said. The study is published in the journal Psychological Science. Copyright 2010 by United Press International
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It may take more than a facelift ROCHESTER, N.Y. (UPI) -- It takes more than tightening loose skin via a facelift to restore a youthful look, U.S. researchers suggest. Dr. Howard N. Langstein of the University of Rochester Medical Center suggests that the future approach to facial rejuvenation may be two-fold, first restoring structure underneath before performing skin-tightening procedures. Reviewing a collection of 120 facial computed tomography scans taken for other, unrelated medical reasons, plastic surgeons measured changes that occurred to facial bones over time. The computed tomography scans were divided equally by gender and age, 20 men and 20 women in each of three age groups: 20-36, 41-64 and 65 and older. Researchers used a computer program to measure the length, width and angle of the mandible, or jaw bone, for each scan, and compare the results for each group. The researchers found the angle of the jaw increases markedly with age, which results in a loss of definition of the lower border of the face. Jaw length decreases significantly in comparisons between the young and middle age groups, whereas the decline in jaw height from those ages 41-64 to the group age 65 and older was noteworthy. The findings were presented at the American Association of Plastic Surgeons annual meeting in San Antonio and published in the Journal of Plastic and Reconstructive Surgery. Copyright 2010 by United Press International
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