some causes of hearing damage
Once hearing is damaged, it often can’t be
restored. Some of the many causes of hearing damage include:
Noise – sound is picked up by a small,
spiral-shaped organ called the cochlea that is located within the inner ear.
Thousands of tiny hairs in the cochlea sense the vibration and pass the message
to the brain via the cochlear nerve. These sensitive hairs can be damaged by
excessive noise. Ringing in the ears (tinnitus) after exposure to loud noise is
a warning sign that your ears have been overloaded.
Drugs – certain chemicals and drugs can damage
your hearing.
Disease – some diseases, such as measles, mumps,
rubella (German measles) and meningitis, can cause loss of hearing.
Injury – including perforation of the ear drum,
fractured skull or large changes in air pressure (barotrauma).
Loud noise and hearing loss
It is a mistake to believe that only noises loud
enough to cause earache are capable of causing damage. The inner ear can still
be harmed by noise, even when it doesn’t send you a pain signal. A rule of
thumb is that if you need to shout to be heard over the noise, it’s potentially
damaging. Suggestions on how to protect your ears from noise include:
Avoid exposure to noise when you can.
Consult with your occupational health and safety
officer at work if you are concerned about noise levels in the workplace.
When unavoidably exposed to loud noise, wear
personal hearing protection such as earplugs, ear muffs or both.
Wear earplugs in noisy environments, such as
discos, rock concerts or motor racing events.
Remember that everyday equipment, such as
lawnmowers, power tools and personal stereos, may be loud enough to be damaging
your ears.
BY.N.K
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