Tag Archive: children

Children need quiet

Jennifer King Lindley, Real Simple, has written a fascinating article about the importance of quiet time for children entitled, “The One Thing Your Kid Needs—and Isn’t Getting.” Lindley begins her piece with an interview of Arline Bronzaft, PhD, noted noise activist and co-founder of The Quiet Coalition, whose landmark research “found that the reading scores of elementary students in classrooms located next to train tracks lagged a full year behind their peers in quieter classrooms on the other side of the building.” Dr. Bronzaft states that not only does noise interfere with learning, it causes a great deal of stress that leads to learned helplessness, “the feeling that you just have to sit there and take it,” which then causes still more stress.

But noise doesn’t just interfere with formal education, as Lindley tells us that “even moderate background noise can interfere with the ability of babies to learn new words.”

So what can you do to protect your children? Lindley offers specific advice for young children and teens, but both sets of advice basically distill down to two important elements: reducing background noise and distracting devices and learning to embrace quiet time.

Lindley’s article is an interesting read and well worth your time. Click the link above to read it in full.

 

 

NYC’s DEP launches sound and noise education program

Photo credit: Arline Bronzaft, PhD

By Arline Bronzaft, PhD, Board of Directors, GrowNYC, and Co-founder, The Quiet Coalition (introduction by G.M. Briggs, Editor)

The educational arm of New York City’s Department of Environmental Protection (DEP) has recently launched a sound and noise education module.The module consists of:

Interactive, multi-disciplinary, STEM lessons and activities [that] introduce students and teachers to the study of the New York City sound environment, New York City’s Noise Code, and the public health issues, both mental and physical, associated with noise.

One element of the elementary lesson plan is the book “Listen to the Raindrops,” by Dr. Arline Bronzaft, noted noise activist, GrowNYC board member, and a co-founder of The Quiet Coalition. Dr. Bronzaft writes about her involvement in the DEP’s groundbreaking noise education efforts:

For years I have conducted research and written on the adverse effects of noise on mental and physical health, including the impacts of noise on children’s learning. One day discussing noise with a children’s book writer, she suggested that I take a stab at writing a book to teach children about the dangers of noise. My first response was that I was not suited for the task, but she said, “if not you, who?” When I left her apartment, I took pencil to paper and during the hour trip back to my home I completed the book “Listen to the Raindrops.” The book, which was written in rhyme, aimed to teach children about the beauty of the good sounds around them and the dangers of noise, especially to their ears.

A children’s book requires illustrations, of course, and I was fortunate that Steve Parton, an illustrator, and the father of a daughter who had received one of the first cochlear implants, agreed to provide the illustrations. After reading the book to a number of classes and listening to the children’s comments, it was clear that Steve’s illustrations beguiled the children.

For years I have worked closely with DEP in our joint efforts to bring the decibel level down in this city. Much still needs to be done, but I was delighted when the DEP’s educational arm added a sound/noise component to its website and asked to include “Listen to the Raindrops” to its curriculum.

The DEP has recently launched its sound and noise curriculum–it is online and all are invited to go to the site to see it. Now we need you to spread the word about the curriculum. Noise is not just a New York City problem. Cities and towns worldwide can include noise education in their school curricula. The federal Environmental Protection Agency also has materials on its website that educate elementary school children about the harmful effects of noise ( e.g., Listen Up!), but at one time the agency made a greater effort than today to reach out to schools nationwide about teaching children about the dangers of noise.

Let us alert public officials, educators, and all citizens to the importance of teaching children early on that noise will harm their ears, their learning ability, and their overall health. Promoting these educational materials will also inform the general public about the deleterious impacts of noise, as the children will undoubtedly bring home the sound and noise information they learn at school and become spokespersons for quieting our surroundings. And the children shall lead!

Dr. Arline Bronzaft is a researcher, writer, and consultant on the adverse effects of noise on mental and physical health. She is co-author of “Why Noise Matters,” author of “Listen to the Raindrops” (children’s book illustrated by Steven Parton), and has written extensively about noise in books, encyclopedias, academic journals, and the popular press.  In addition, she is a Professor Emerita of the City University of New York and Board member of GrowNYC.

Can fireworks hurt babies’ ears?

Cat Bowen, Romper, looks at whether fireworks can hurt babies’ ears. Bowen, who is deaf, has a daughter who is hard of hearing, so she is particularly concerned about the impact of noisy fireworks, writing “that what little hearing we have, we want to protect at all costs.”

Bowen points to a Boys Town National Research Hospital report which states that “fireworks register at over 140 decibels of sound” and recommends safe distances for adults and children. Bowen writes that adults “need to be about 65 feet away from the fireworks to be considered safe,” but it’s more than double that for a child.

But what about babies? Bowen says that “it’s different with babies,” because there is no hearing protection gear made for infants under six months. So “[c]an fireworks hurt your baby’s ears?” “Absolutely,” says Bowen, who recommends that you limit your baby’s exposure, try using protective headphones, and “keep you and your baby as far from the fireworks as you can while still enjoying the view.”

Sounding off on noise

Jeanine Barone, writing for Principa-Scientific International, interviews Arline Bronzaft, PhD, asking Dr. Bronzaft about her lifetime of fighting noise. Dr. Bronzaft, an environmental psychologist, is a professor emerita of psychology at Lehman College, City University of New York, and an expert witness in court cases and government hearings on the impact of noise on mental and physical well-being.  She also is a founding member of The Quiet Coalition.

Barone wonders whether noise has to be loud to affect people, to which Dr. Bronzaft responds that noise doesn’t necessarily have to be loud to affect someone because “[n]oise is any unwanted, uncontrollable, or unpredictable sound.”  Dr. Bronzaft describes the negative effects of noise on health and quality of life, including its impact on children’s learning.

That noise is understood to be detrimental to children’s learning is due in large part to Dr. Bronzaft’s landmark study of an elementary school adjacent to an elevated train track in New York City. On one side of the building “the classrooms were exposed to passing train noise every 4.5 minutes,” while on the other side of the building “the classrooms were not intruded upon by passing train noise.”  Dr. Bronzaft’s study showed that “[b]y the sixth grade, the children exposed to noise were nearly a year behind in reading.”

But Dr. Bronzaft didn’t conclude her study and move on.  Rather, she brought the data to the transit authority and convinced them to employ noise suppression technology on the nearby tracks.  Some years later she did a follow-up study that found that the noise had decreased and “children on both sides of the school were reading at the same level.”

Click the link to learn more about Dr. Bronzaft’s work

What can you do to protect your children’s hearing?

Doctors say kids are at higher risk for hearing loss. Dr. Rachel Wood, an audiologist with the LSU Health and Sciences Center, studies and treats hearing loss patients, and increasingly she is seeing younger patients. Dr. Wood says that there are a “growing number of factors that cause hearing loss.” One particular concern is that “[c]hildren especially can plug into their phone and crank up the volume, turn up the sound effects on video games, or even watch rock concerts on their computers.”

Dr. Wood finds headphones to be “especially troubling,” stating:

There are tiny sensors in your inner ear that are very sensitive. Loud sounds damage those sensors, and if they’re destroyed, they will never grow back, which leads to hearing loss. The amount of damage is based on the volume of the sound and how close the sound is to your ear. Since headphones put the sound right next to those sensors, it magnifies the damage.

So what can you do to protect your child’s hearing?  Dr. Wood suggests that parents set volume limits on electronic devices such as phones.  She also advises parents to impose time limits for using headphones and have their children take a break every 30 to 60 minutes.  Finally, if your children are going to events with loud noises, such as concerts or fireworks displays, hand them a pair of ear plugs.  Purchased in bulk, ear plugs are a cheap and easy way to protect your children’s hearing.

 

 

 

Hearing Loss Is Growing


From the book The Human Body and Health Revised by Alvin Davison, 1908 / Public Domain

And Experts Say Earphones Are Part Of The Problem.

Mack interviews audiologist Michele Abrams who spoke about limiting exposure to damaging sound:

When we think about decibel levels, when we think of loudness levels, it’s really incremental.  It’s a logarithmic scale. It’s not a linear scale. So we know that 85 db is that critical level. Eighty-five db, eight hours a day, that’s your maximum. If it’s 90 db — five db greater — you have to cut your time in half.

While generally informative, Abrams’ comment unfortunately identifies 85 db, eight hours a day as the “critical level.”  But this noise exposure level is too high.  It was developed solely as an occupational noise exposure standard and should never be applied to the general public, certainly not to children.  As Dr. Daniel Fink, a noted noise activist, wrote in, “What Is A Safe Noise Level For The Public?”:

In the absence of a federal standard, an occupational standard meant to prevent hearing loss appears to have become the de facto safe level for all public noise exposures. This is demonstrated by the use of 85 decibels as a safe sound level by hearing health professionals and their organizations, in media reports, and in publications, most often without time limits; by its use as a volume limit for children’s headphones marketed to prevent hearing loss, again without exposure times; and by general acceptance of higher indoor and outdoor noise levels in the United States.

*   *   *
Eighty-five decibels is not a safe noise exposure level for the public. In 1972, the National Institute for Occupational Safety and Health developed an 85 A-weighted decibel recommended exposure level to reduce the risk of hearing loss from occupational noise exposure. … Even with strict time limits, this standard does not protect all workers from hearing loss.

So what is a safe noise level for the public?  Dr. Fink states:

In 1974 the Environmental Protection Agency’s (EPA’s) Office of Noise Abatement and Control (ONAC) adjusted the National Institute for Occupational Safety and Health recommendation for additional exposure time: 24 instead of 8 hours daily and 365 instead of 240 days annually.  The EPA calculated the safe noise level for the public to prevent hearing loss to be a 70-decibel time-weighted average for a 24-hour period… The EPA did not adjust for lifetime noise exposure, now almost 80 years versus 40 work-years, so the real average safe noise level to prevent hearing loss is probably lower.

One thing is clear, allowing children to use earbuds or headphones without limiting volume and time exposure is a recipe for hearing loss.  Since the federal government has abdicated its authority to regulate noise, and manufacturers are unlikely to design products that limit the user’s ability to deliver as many decibels as he or she wants, parents must step in to protect their children’s hearing.  Here’s something that will help: Don’t allow your children to wear earbuds and headphones.  Tell them that if they want to listen to music they must play it through a speaker.  While this may be unpopular, know that you will be giving your children an important gift–the ability to listen to and enjoy music throughout their lifetimes.

 

 

Headphones marketed as safe for children aren’t!

kid-wearing-headphones

By Daniel Fink, M.D.

A new analysis on “the best kids’ headphones” by The Wirecutter, a product recommendations website owned by The New York Times, as reported in the New York Times science section, found that headphones marketed as “safe” for children’s hearing were louder than advertised. The Times’ article did not adequately reflect the extensive and thoughtful analysis by The Wirecutter’s reviewers, Lauren Dragan and Brent Butterworth. Their review deserves to be read (and reread) in its entirety, as it is without doubt the most complete and scientifically sound review about any noise topic that I have seen in the popular media.

The Wirecutter review mentions that two problems with headphones marketed as “safe for children”: (1) that the headphones are louder than they claim to be, and (2) that manufacturers are using an industrial-strength occupational noise exposure level as a safe noise level for children. The review doesn’t emphasize the latter point enough.

I discuss the origin of the 85 decibel noise exposure standard in detail in an editorial in the January 2017 issue of The American Journal of Public Health. The 85 decibel volume level at issue was developed by the National Institute for Occupational Safety and Health (NIOSH) to protect workers’ hearing. It comes with strict time limits–an 8-hour day, 240 days a year, for a 40-year work career–and even then does not protect all workers from hearing loss. NIOSH discussed the difference between an occupational noise standard and a safe noise level for the public earlier this year in a blog post titled, “Understanding Noise Exposure Limits: Occupational vs. General Environmental Noise.” The NIOSH post makes it very clear that 85 decibels is not a safe noise level for the public, and it certainly is not safe for toddlers or children who may be listening to music or watching videos for more than 7 hours a day, every day. In addition, children, and especially teens, are exposed to other loud noise sources–action movies, sports event, etc.–so their total noise dose likely approaches dangerous levels.

Children’s ears may be more sensitive to noise than adult ears. First, there is no doubt that an 85 decibel headphone speaker is closer to a child’s eardrum because the external auditory canal is shorter in children than adults. (Noise follows the inverse square law, so the closer a noise source is to the ear the louder it is.) Second, it’s unlikely that children will limit their listening to just 240 days a year, on average they will live for almost 80 years, and in the course of their lifetimes they will undoubtedly be exposed to more noise, in gyms, parties, rock concerts, sports events, and the like. A child’s delicate ears have to last her a whole lifetime.

Studies of auditory acuity in so-called primitive populations show that significant hearing loss in old age is not inevitable. These studies are not available online, so I can’t provide links, but the classic studies were done in the 1960’s by Rosen and colleagues in the Mabaan population in the Sudan, and by Dickson and colleagues in the Kalahari Bushmen. Rosen found that the Mabaan could carry on a conversation at normal speech volumes while facing away from each other at a distance of 100 yards. Dickson wrote that the Bushmen could hear an airplane 70 miles away. As noted in The Wirecutter review, acute hearing was a matter of life or death for our primitive ancestors, either to find food or to avoid being a predator’s meal. The Rosen and Dickson studies suggest that hearing loss so commonly seen in the U.S. is likely not part of normal part of normal physiological aging, but rather is noise-induced hearing loss–i.e., the result of a lifetime’s exposure to excessive noise. If one starts listening to 85 decibel sound at age 3, hearing loss and hearing aids may be inevitable–and at an earlier age than in the past.

What can be done to protect children’s hearing from dangerous consumer products marketed to them? The federal agencies charged with protecting the public should do their jobs. The Federal Trade Commission should take enforcement action on the grounds of false advertising against vendors claiming that headphones with the 85 decibel volume limit are safe for children. They may be safer than headphones without a volume limit, but they are by no means safe, especially without recommendations for time limits on use. The Consumer Product Safety Commission should require warning labels on headphones, earbuds, and personal music players, stating “LOUD MUSIC CAUSES DEAFNESS!” The pediatric community should do more to educate parents about the dangers of noise for children. And parents must step up and demand truly safe products for their children or deny their children access to products that will destroy their hearing.

Dr. Fink is a leading noise activist based in the Los Angeles area.  He serves on the board of the American Tinnitus Association, is the interim chair of Quiet Communities’s Health Advisory Council, and the founding chair of The Quiet Coalition, an organization of science, health, and legal professionals concerned about the impacts of noise on health, environment, learning, productivity, and quality of life in America.

Important information for parents

Catherine Caruso, reporting for Scientific American, writes about “Detecting Hidden Hearing Loss in Young People.”  Caruso looks at hidden hearing loss, a phenomenon discovered in 2009, which the researchers who discovered it consider a “likely contributor to the cumulative loss typically associated with aging.”  Now, those researchers have developed tools for detecting hidden hearing loss and have discovered evidence of hidden hearing loss in young people.

While Caruso notes that there is hope that hidden hearing loss could be reversed in the future, she also points out steps one can take now to protect hearing: namely, by limiting noise exposure and using ear protection.  And parents, talk to your kids about their earbud and headphone use.  No one knows if and when researchers will be able to reverse hidden hearing loss, so avoiding hidden hearing loss in the first instance is the best tact.

Noise is more than a mere nuisance:

How Noise Pollution Hurts Kids.

Read this fascinating piece by Olga Khazan about researchers who found that children who lived on lower floors in a high-rise building near a highway in Manhattan had a harder time distinguishing words than kids living on higher floors and they were worse at reading.  Frighteningly, “[t]he relationship between the kids’ scores and floor level was strongest for the kids who had lived in the building the longest.”

Noise is more than an annoyance when it can interfere with learning.

 

Quiet fireworks? Must be an oxymoron, no? No:

Oh, Say, Can You See (but Not Hear) Those Fireworks?

Why would someone want quiet fireworks, you may ask?  Pet owners know that cats and particularly dogs can be adversely affected by fireworks, but humans are at risk as well:

For people, loud fireworks can lead to hearing loss. The World Health Organization lists 120 decibels as the pain threshold for sound, including sharp sounds such as thunderclaps. Fireworks are louder than that.

“They’re typically above 150 decibels, and can even reach up to 170 decibels or more,” said Nathan Williams, an audiologist at Boys Town National Research Hospital in Nebraska.

Dr. Williams also sees higher traffic to his clinic after Independence Day. “We usually see a handful of people every year,” he said. “In these cases, hearing loss is more likely to be permanent.”

And Dr. Williams added that children are more vulnerable to hearing loss from fireworks because they have more sensitive hearing.  So if you are going to a fireworks display this weekend, enjoy it safely and bring ear plugs for the whole family.

Thanks to Daniel Fink, M.D., a noise pollution activist in the Los Angeles area, for the link.  Dr. Fink serves on the board of the American Tinnitus Association and the Health Advisory Council of Quiet Communities.