Does listening to music through earphones every day damage your hearing? What volume and how long is safe?
This answer is a draft. It stays unpublished until legal review and source verification are complete.
On commuter trains in Japan's cities, most people are wearing earphones. The WHO warns that "about 1.1 billion young people worldwide are at risk of hearing loss", and loud music is the main cause. Noise-induced hearing loss does not come back once it has progressed, so it is worth knowing, in numbers, "at what volume, and for how many hours".
Volume and time guides (WHO/ITU 2019 standard)
| Loudness | Example | Weekly limit (adults) |
|---|---|---|
| 80 dB | Beside a main road, a vacuum cleaner | 40 hours |
| 83 dB | — | 20 hours |
| 86 dB | Inside a moving train | 10 hours |
| 89 dB | — | 5 hours |
| 92 dB | — | 2.5 hours |
| 95 dB | An underground platform | 75 minutes |
| 100 dB | A live-music venue, earphones near maximum volume | 15 minutes |
| 110 dB | A car horn at close range | 1–2 minutes |
- Every 3 dB up doubles the sound energy, and halves the allowable time. This is why "turning it up just a little" makes a big difference.
- WHO estimate: worldwide, about 1.1 billion people aged 12–35 are at risk of hearing loss from loud recreational sound (2015). In Japan, the Ministry of Health, Labour and Welfare has issued warnings under the name "headphone hearing loss" (ヘッドホン難聴).
- Features of noise-induced hearing loss: high frequencies (around 4,000 Hz) go first, and you rarely notice it yourself. Ringing in the ears (tinnitus) may come first. The hair cells of the inner ear do not regenerate once destroyed, so the loss does not come back.
- The 60/60 rule: no more than 60% of maximum volume, for up to 60 minutes at a stretch, then rest the ears for 5–10 minutes.
- Surrounding noise and volume: to hear music inside a train (80–85 dB) you need a volume above that. If canal-type or noise-cancelling earphones cut the outside noise, you can lower the volume by around 10 dB for the same perceived sound.
- Smartphone settings: both iPhone and Android have a "headphone volume limit" or "volume warning" function, and you can set the cap at around 80 dB. Always set it on children's devices.
- Warning signs: ① sounds seem muffled or the ears ring right after you take the earphones out, ② the person next to you can hear your music, ③ you cannot hear people speaking while wearing them. All of these mean too loud.
[Verify] Check the WHO/ITU standard values (80 dB, 40 hours) and the 1.1 billion estimate against WHO's "Make Listening Safe" material. Check the Japanese noise-level examples against Ministry of the Environment and railway operator material.
Misunderstanding 1｜Young ears are strong, so it is fine
Noise-induced hearing loss builds up over time. Loud music in your youth shows up in your hearing in your 40s and 50s. Hair cells, once destroyed, do not return.
Misunderstanding 2｜If it does not feel loud, it is safe
Once you are used to it, even loud sound feels "normal". Manage by the device's volume limit and by time, not by feel.
Misunderstanding 3｜Noise cancelling is bad for the ears
The reverse. Cutting surrounding noise lets you lower the volume for the same perceived sound, so the load on the ears falls. But because you cannot hear outside sounds, take care for safety when walking or cycling.
Misunderstanding 4｜Bone-conduction earphones cannot cause hearing loss
Bone conduction also delivers sound to the inner ear, so loud volume carries the same risk. The advantage of leaving the ears open is about safety, not hearing.
Misunderstanding 5｜Ringing in the ears just means I am tired
Ringing after loud sound is a sign the inner ear has been damaged. If it keeps happening, lower the volume; if it lasts several days, see an ear, nose and throat clinic (耳鼻咽喉科, jibi-inkōka). For sudden hearing loss, starting medical care within 1–2 weeks of onset is generally described as important.
---
Sources
- World Health Organization / ITU, *Safe listening devices and systems: a WHO-ITU standard* (2019)
https://www.who.int/publications/i/item/9789241515276
- Ministry of Health, Labour and Welfare, e-Health Net, *Headphone hearing loss (noise-induced hearing loss)* [ヘッドホン難聴（騒音性難聴）]
https://www.e-healthnet.mhlw.go.jp/information/hearing/
- Oto-Rhino-Laryngological Society of Japan, *Ear diseases: noise-induced hearing loss, sudden hearing loss* [耳の病気：騒音性難聴・突発性難聴]
https://www.jibika.or.jp/owned/hp/disease/
⚠️ Editorial note: the source URLs above were identified by search. Our working environment cannot reach go.jp domains, so the contents have not been checked against the text. Verify every source before publication and record who checked it and when.
About this article
What we share here are ideas and everyday practices passed down among people living in Japan, together with general information drawn from public sources. They are not official recommendations, and they are not professional instruction. Practices vary between households and regions.
This is general information. Results vary from person to person and depend on your own conditions and surroundings.
Please decide for yourself, using your own judgement, whether any of this suits your situation. We cannot accept responsibility for any damage, loss or injury arising from following this article.
This article is not meant to diagnose or manage any specific medical condition. If you are worried about your health, see a doctor rather than relying on your own judgement.
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