December 28, 2016

Noise pollution jeopardizes health of people, animals and environment

Loud, sharp or constant noise in the workplace, home or leisure areas can cause hearing impairment, hypertension, ischemic heart disease, annoyance and aggression, sleep disturbance, and a lowering of learning capability which can be measured in school results.

Changes in the immune system and birth defects have even been attributed to exposure to noise but evidence is limited as the difficulties of mounting a control experiment without permanently damaging the participants is obvious.

Although some presbycusis (the type of hearing loss that gradually occurs in most individuals as they grow older)  in many developed nations the cumulative impact of noise is sufficient to impair the hearing of a large fraction of the population over the course of a lifetime.  Current generations are choosing loud music over their ability to hear in the future.

The unit used to measure environmental sound intensity is the ‘decibel’ (dBA).
Zero decibels is the softest sound the healthy human ear is able to hear. The level of loudness heard doubles every 10 decibels. Continued exposure to noise above 85 dBA eventually harms hearing. The louder the sound, the faster hearing will be affected.

The results are tinnitus, hypertension, vasoconstriction and other cardiovascular impacts plus stress, increase workplace accident rates, and stimulate aggression and other anti-social behaviors.  A man in our town was actually shot over his complaint about the next-door neighbour’s noise level!   Apart from loud music, the world now suffers from an overload of vehicle  and aeroplane noise and industrial noise of factory machinery etc..

Loud sounds will actually damage the principal fluid-filled structure of the inner ear – the cochlear – through increased pressure to the area.  The noise can be sharp and sudden or an ongoing level too high for this fine mechanism to withstand. A very loud sound in a particular frequency range can damage the cochlea’s hair cells that respond to that range thereby reducing the ear’s ability to hear those frequencies in the future.  Damage cannot be reversed.

There is some evidence that differing populations react in different ways to noise, something to do with the local atmosphere.  We are living in Mexico presently and I must say that this is the noisiest place I have ever been.  The people love their fireworks, loud doof-doof speakers in their cars, cantinas with various styles of music all at once, live bands, screaming for fun and singing.  Mostly at night. But I do notice that the locals in our street sleep late in the morning, the kids are a bit aimless and dozy and the school retention rate is abysmal.

Damage to the middle ear will eventually affect balance as well.  According to some people, normal traffic noise is enough to raise blood pressure.  And there is a raft of other illnesses, even ulcers attributed to noise.  But maybe it is just that flow of bile when you are lying awake thinking evil thoughts about your noisy neighbours!!

‘Over 1.8 million people claim noisy neighbours have made their life a misery and they cannot enjoy their own homes. The impact of noise on health is potentially a significant problem across the UK given over 17.5 million Britons (38%) have been disturbed by the inhabitants of neighbouring properties in the last two years. For almost one in ten (7%) Britons this is a regular occurrence.’ (Wikipedia).

Birds and animals will flee from noise.  When they urbanise, there is some adaptation but not enough to keep a healthy population.

‘Children from noisy residences often possess a heart rate that is significantly higher (by 2 beats/min on average) than in children from quieter residences.’ A study by  Cornell University 1993.

There are 28 million diagnosed hearing impaired people in the USA.  Whew! No wonder they are avoiding health cover!

Too often, people CHOOSE to blast themselves with noise.  For instance, most ‘networking events’ have music that precludes any conversation and that is something really illogical. Ear damage from iPods also are a future problem looming for health networks.

Speakers

So what can we do about it.

  1. Insulate your house for noise and double glaze (the latter not much comfort if you are a fresh-air fiend and sleep with windows open).
  2. Plant a buffer of leafy, thick trees.  Roadways should have linear forests to absorb carbon dioxide and noise anyway.
  3. Politely explain to the source of the noise how badly this is affecting you. (To some extent this worked for us.  The cantina over the back fence is not so bad after midnight these days.)
  4. Keep your own noise down.  For the occasional party, warn your neighbours.
  5. Lobby electronic companies to stop releasing louder and louder equipment.
  6. Check your appliances (such as the fridge) for an annoying hum.  This can sound bad in the next apartment.
  7. Consider moving!
  8. Lobby governments to employ more people at the same time to finish road works and capital projects faster to minimize ongoing hum of building noise.
  9. Lobby for zoning for noise.  Residential areas should not be subject to industrial noise.
  10. Educate your kids about the effects long term of high volume.
  11. Get your ears checked.  Take advantage of that free service but don’t feel obliged to buy their hearing aids.  Shop around!
  12. Pay attention to warning signs of impending deafness: tinnitus, difficulty of understanding what people are saying, muffled sounds after you leave a noisy room, inability to hear in a crowd.
  13. Take ear plugs to concerts and clubs or anywhere you know it will be noisy.

Hearing loss is a big national expense in Australia as well as other nations.  Much is self-induced.  Just remember that if you are listening to loud music and have animals near you (eg. Dogs), the pain for them is considerable as they have acute hearing.  So stop being cruel and turn the volume down NOW!

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Comments

  1. concerned mother says:

    How do you stop a neighbour from broadcasting, not the NOISE of music, but the doof-doof of the speakers vibrating through the neighbourhood. This comes through the pillow when you are trying to sleep. As its not ‘noise’, the police say ‘there is nothing they came do’.

  2. You need to put in a report to the E.P.A. (if you are in Australia) as it DOES qualify as noise and has been proven to affect the breeding of birds and their habits. http://www.epa.vic.gov.au is the Victorian branch. I believe that there are parallel organisations in USA, Canada and the UK. I will see what I can find for you if you let us know where you are geographically. My neighbours seem to be quiet now and I think it is because I was polite and desperate looking and took them a sign for their clients so they wouldn’t play their ‘doof doof’ speakers in the car as they leave at 3 am!! Good luck!

    • Wendy…. “clients leaving at 3am!!”?? …what’s that all about? ..just what kind of business are they running there? (just curious :-) )

      • Sports Bar. Fortunately, the owner was voted Delegado (equivalent of town mayor) and seems to have found a new sense of responsibility, so now it’s quite bearable, sometimes even lovely to have in the background (mariachi). Sadly, the SPorts Bar was the gathering place for taxi drivers. Ummmm. A lot of boozing. And singing loudly and shouting as well as the juke box. It’s OK now.

  3. I want to give a report to the elders and mayor of our beautiful town in Mexico to ask them to lower the volume and duration at the open air disco in the center of the town. I need facts to present the terrible health issues that effect the town people, elders and children. From hearing loss, heart issues, anger,crime ,subsonic bass caused abortion, heart attacks etc. Please help.
    email me
    mannyhadlock@hotmail.com

    • Wow that sounds bad in your area! you have to keep us up-to-date with how you go!

      Luckily in my area in Melbourne it is very peaceful but as soon as I go into the city I really notice the noise levels a lot more!

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