In this section:

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Causes of acquired deafness
USA Today age prevalence
Consonant confusion with sloping audiogram
British campaign against tinnitus.
Loud Music
Noise Awareness
Young people and loud music

Elsewhere on the site:

Causes of acquired deafness
British campaign against tinnitus.
Young people and loud music
The Q Files Frequently asked questions, which include 
The Q Files- Monaural hearing loss (one ear)