In the '80s and '90s, adolescent boys were more likely to suffer hearing loss due to exposure to loud noise.
But a new study finds teen girls are losing their hearing at levels previously seen only among boys.
Study participants revealed exposure to loud noise and use of MP3 players.
Researchers say it's a cumulative process, and it depends not just on volume but also how long a person is exposed to damaging noise levels.
Noise causes hearing loss by damaging the sensory hairs inside the ear canal.
The study appears in the January issue of Pediatrics.