A Deeper Source of Tinnitus?

Although traditional theories of tinnitus suggest the condition is caused by cochlear damage, a recent study published in the Journal of Neuroscience points to another source - the brain cranking up the volume to account for subtle hearing loss.  Researchers focused on 15 participants who reported tinnitus symptoms, as well as 18 participants free of tinnitus.

After recording the brain activity of participants as they listened to a series or rapid-fire clicks, researchers found that some sounds showed a reduced amplitude, while sounds generated closer to the brain had normal amplitude - even in those with tinnitus.  The authors suggest these results are evidence of "hidden hearing loss," and tinnitus is merely the brain's attempt to compensate by turning up the volume.  Search "ringing deeper" at www.sciencenews.org.

from The Asha Leader 

The Perils of Too Much Headphone Use.

from the Better Hearing Institute

There's no denying headphones contribute to the convenience of our listening pleasure: We can block out the distractions of the world with a slew of downloaded tunes. But there's also no denying these devices put our aural health, and our very lives, at risk, according to two recent studies. And teens and young adults are those most affected.

Hearing loss
Blaring sound into our ears at close range has long been proven to lead to hearing loss and permanent damage. Now new research by Tel Aviv University finds that the music listening habits of teenagers puts one in four teens at risk of early hearing loss as a direct result of listening to iPods, MP3 players and other music devices at high volume--their preferred acoustical hearing level.

The researchers asked study participants about their preferred volumes, and took those decibel measurements and average time spent plugged into their personal listening devices (PLD) daily, to reach their conclusion. The study was published in the International Journal of Audiology.

"In 10 or 20 years it will be too late to realize that an entire generation of young people is suffering from hearing problems much earlier than expected from natural aging," wrote Professor Chava Muchnik of TAU's Department of Communication Disorders in the Stanley Steyer School of Health Professions, in a released statement.

Those teens who misuse PLDs today might find that their hearing begins to deteriorate as early as in their 30s and 40s, much earlier than past generations, warned the researchers. Muchnik recommends that manufacturers adopt European standards that limit the output of PLDs to 100 decibels. Currently some models can reach 129 decibels.

Decibel levels above 90 are considered "extremely loud" by the American Speech-Language-Hearing Association, which offers resources on noise and what decibel levels are dangerous and safe and what you can do to protect your hearing.

Pedestrian injury
Since 2004, serious injuries to pedestrians listening to headphones have more than tripled, according to research from the University of Maryland School of Medicine and the University of Maryland Medical Center in Baltimore.

Initiated after reviewing the death of a local Maryland teen, wearing headphones, who died crossing railroad tracks despite the oncoming train's auditory alarms, the study reviewed 116 cases in other states of accidents and injuries involving pedestrians wearing headphones that tune out warning sounds and other aural clues. Seventy percent of those cases ended in fatalities when the pedestrian failed to hear the sound of car or train horns. Young adult males under age 30 accounted for more than two-thirds of the victims.

"Everybody is aware of the risk of cell phones and texting in automobiles, but I see more and more teens distracted with the latest devices and headphones in their ears," wrote lead author Richard Lichenstein, M.D., associate professor of pediatrics at the University of Maryland School of Medicine and director of pediatric emergency medicine at the University of Maryland Medical Center in a released statement.

Two phenomena are likely occurring simultaneously during these accidents, noted the researchers: "Inattentional blindness," caused by electronic devices such as headphones, in which multiple stimuli divide the brain's mental resource allocation; and intensified sensory deprivation, where the ability to hear the warning signals are masked by the sounds produced by the headphones and portable electronic devices.
All the more reason to give your ears a rest.

People with Chronic Kidney Disease Should Have Their Hearing Checked During National Kidney Month, World Kidney Day, Better Hearing Institute Urges

Washington, DC, February 6, 2012 People with chronic kidney disease (CKD) and other diseases of the kidney should make hearing checks a routine part of their medical care, according to the Better Hearing Institute (BHI), which is offering a free, quick, and confidential online hearing check at http://www.hearingcheck.org/. BHI is offering the online convenience as part of its effort to raise awareness of the link between kidney disease and hearing loss during National Kidney Month in March, and in recognition of World Kidney Day on March 8. The online hearing check will help people determine if they need a comprehensive hearing test by a hearing healthcare professional.
Unaddressed hearing loss can have very significant consequences on a person’s day-to-day living and greatly undermine quality of life,” said Sergei Kochkin, PhD, BHI's executive director. “We need to include hearing screenings as a routine part of the medical care for people with kidney disease to help optimize their quality of life.”
As published in the American Journal of Kidney Diseases and highlighted on the National Kidney Foundation web site, a team of Australian researchers found that older adults with moderate chronic kidney disease (CKD) have a higher prevalence of hearing loss than those of the same age without CKD.
According to the National Kidney Foundation, an Australian research team assessed more than 2,900 individuals aged 50 and older, including 513 with moderate chronic kidney disease. Of those with CKD, more than 54 percent reported some level of hearing loss compared to only 28 percent of the rest of the group. Nearly 30 percent of the CKD participants showed severe hearing loss compared with only 10 percent of the non-CKD participants.
Referencing the Australian study, Dr. Kerry Willis, Senior Vice President of Scientific Activities at the National Kidney Foundation stated:  “These findings could lead to a modification of the usual care of people with CKD. Earlier clinical hearing assessments and fitting of hearing aids in CKD patients can improve quality of life and lead to better management of underlying conditions which could, in turn, potentially preserve hearing function.”
About Chronic Kidney Disease
(Source: National Kidney Foundation)
According to the National Kidney Foundation, more than 26 million Americans over age 20 have CKD—roughly 13 percent of the adult population. And people with high blood pressure, diabetes, and/or a family history of kidney disease are at risk for developing CKD. The good news is that there are things that people can do to help prevent or delay the progression of CKD.
The National Kidney Foundation offers these top five tips for keeping both the kidneys and heart healthy.

1. Don’t smoke. The strongest modifiable risk fact for both kidney and heart disease is smoking. There is nothing you can do that is more important in the prevention of both heart and kidney disease as stopping smoking.
2. Control your blood pressure.  High blood pressure causes both kidney and heart disease.
3. Eat a proper diet. This should be patterned after the DASH diet.
4. Maintain a healthy body weight, which requires balancing calorie intake with exercise and activity.
5. Have your physician test you for both heart and kidney disease. It turns out that heart disease is a risk factor for kidney disease and kidney disease is a known risk factor for heart disease. Hence, if you know you have one, you should have yourself tested for the other.

About Hearing Loss
Approximately one in 10 Americans, or 34 million people, have some degree of hearing loss. Yet, fewer than 15 percent of physicians today screen for hearing loss during annual physical exams.

Numerous studies have linked untreated hearing loss to a wide range of physical and emotional conditions, including impaired memory and ability to learn new tasks, reduced alertness, increased risk to personal safety, irritability, negativism, anger, fatigue, tension, stress, depression, and diminished psychological and overall health.
Fortunately, the vast majority of people with hearing loss can be helped with hearing aids. And three out of four hearing aid users report improvements in their quality of life due to wearing hearing aids.
About the Better Hearing Institute
Founded in 1973, BHI conducts research and engages in hearing health education with the goal of helping people with hearing loss benefit from proper treatment. For more information on hearing loss, visit http://www.betterhearing.org/. To take the BHI Quick Hearing Check, visit http://www.hearingcheck.org/. To participate in the discussion forum, visit http://www.betterhearing.org/, click on “Discussion Forum,” and go to “Welcome!” to register.