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Author: admin, 16.10.2015
Senior Airman Leighann Schuster, a 141st Air Refueling Squadron boom operator, prepares for her annual hearing exam with the 108th Wing Medical Group at Joint Base McGuire-Dix-Lakehurst, May 17, 2014. Thata€™s what researchers concluded in a study published in the most recent issue of the journal Noise & Health.
The study reviewed the cases of the 7.5 percent of 48,540 servicemembers who reported a€?new-onseta€? hearing loss during their time in service.
Researchers found that individuals who were deployed and had combat experience were 1.6 times more likely to report new-onset hearing loss as compared to their nondeployed counterparts.
By comparison, deployed servicemembers without combat experience were not at increased risk of hearing loss compared to nondeployed individuals, the study found.
The findings imply a€?that much of the hearing loss attributable to the deployment is related to specific combat experiences rather than to deployment itself,a€? the study stated. Some combat troops are reluctant to use hearing protection, researchers wrote, citing previous studies of Canadian troops who felt such equipment a€?reduced detection of auditory warnings and reduced communication among the team membersa€? and of U.S. Boys, girls in grades 8-12 can attend event scheduled to be attended by coaches from about a dozen colleges. NEW YORK—Obese adolescents are more likely than their normal-weight counterparts to have hearing loss, according to results of a new study.
The study found that obesity in adolescents is associated with sensorineural hearing loss across all frequencies (the frequency range that can be heard by humans); sensorineural hearing loss is caused by damage to the inner-ear hair cells.

Although the overall hearing loss among obese adolescents was relatively mild, the almost 2-fold increase in the odds of unilateral low-frequency hearing loss is particularly worrisome. In the United States, nearly 17 percent of children are obese, defined as having a body mass index (BMI) of ?95 percentile.
The study analyzed data from nearly 1,500 adolescents from the National Health and Nutrition Examination Survey—a large, nationally representative sample of adolescents between the ages of 12 and 19, conducted from 2005 to 2006 by the National Center for Health Statistics of the Centers for Disease Control and Prevention. Schuster was required to get the hearing exam as part of her annual physical health assessment.
Findings showed that obese adolescents had increased hearing loss across all frequencies and were almost twice as likely to have unilateral (one-sided) low-frequency hearing loss. It suggests early, and possibly ongoing, injury to the inner ear that could progress as the obese adolescent becomes an obese adult. Participants were interviewed at home, taking into account family medical history, current medical conditions, medication use, household smokers, socioeconomic and demographic factors, and noise-exposure history.
Lalwani and his colleagues speculate that obesity may directly or indirectly lead to hearing loss.
The medical center trains future leaders and includes the dedicated work of many physicians, scientists, public health professionals, dentists, and nurses at the College of Physicians and Surgeons, the Mailman School of Public Health, the College of Dental Medicine, the School of Nursing, the biomedical departments of the Graduate School of Arts and Sciences, and allied research centers and institutions. The study was recently e-published by The Laryngoscope, a journal published by the American Laryngological, Rhinological and Otological Society.

People with low-frequency hearing loss cannot hear sounds in frequencies 2,000 Hz and below; they may still hear sounds in the higher frequencies (normal hearing range is from 20 Hz to 20,000 Hz). Future research is needed on the adverse consequences of this early hearing loss on social development, academic performance, and behavioral and cognitive function. Although additional research is needed to determine the mechanisms involved, they theorize that obesity-induced inflammation may contribute to hearing loss. Columbia University Medical Center is home to the largest medical research enterprise in New York City and State and one of the largest faculty medical practices in the Northeast. Often they can still understand human speech well, but may have difficulty hearing in groups or in noisy places. Low plasma levels of the anti-inflammatory protein adiponectin, which is secreted from adipose tissue, have been found in obese children, and low levels in obese adults have been associated with high-frequency hearing loss (which affects a person’s ability to understand speech).
Obesity also may contribute indirectly to hearing loss as a result of its comorbidities, including type 2 diabetes, cardiovascular disease, and high cholesterol—all of which have been reported to be associated with loss of peripheral hearing (relating to the outer, middle, and inner ear).

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  • AskaSurgun ??It is quite loud and resembles the noise produced.
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